Answer:
A biologist discovered a young, four-legged animal. The animal had lungs, seemed to fertilize internally, and its outer surface was covered with scales. In which class of animals is the biologist likely to place the animal?
reptile
what defines a living system
Which came first on planet earth, plants or animals
Answer:
We do not know entirely for sure
Explanation:
The vast majority of evidence points towards complex multicellular plants and animals evolving around the same time 500 million years ago during the Cambrian period. However, simple single-celled prokaryotic bacteria has been around for nearly a billion years. Personally I think it is more likely for plants to have come first as they are simpler and there seems to be a bit for evidence for them being first, like the discovery of multicellular algae that could be up to 1 billion years old (algae is generally considered to be bacteria)
It may be analyzed that land plants first appeared about 500 million years ago. It was the time of the Cambrian period. At this time, the development of multicellular animals does not begin at a systematic level.
When did the first prokaryotic cell was formed?The first prokaryotic cell was formed about 3.5 billion years ago. It was the time when no oxygen was present (anaerobic), the atmosphere was reduced, and the mode of nutrition was hetero chemotrophic.
The first eukaryotic cell was formed about 1.5 billion years ago which leads to the foundation of animal origination. It stimulates numerous changes with respect to the prokaryotic cell. But prior to that some land plants and fungi are already present which deliver the source of food to the developing living entities.
Therefore, according to researchers and scientists, it may be analyzed that the land plants exist before the animals through the help of the earliest fossils.
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Which of the following is an example of anaerobic respiration?
A. Plant roots respiring in soil
B. Lactic acid building up causing sore muscles
C. Oxygen diffusing into a plant cell through stomata
D. Breaking down of glucose with oxygen inside an animal cell
Answer:
Answer: Lactic acid building up causing sore muscles
Explanation:
Got it right on the test.
An example of anaerobic respiration is lactic acid building up, causing sore muscles. The correct option is B.
What is anaerobic respiration?
Anaerobic respiration is respiration that occurs in the absence of oxygen. When we exercise or run, more amount of oxygen is needed, so there is less oxygen remaining for the reactions, these reactions occur in absence of oxygen.
Thus, the correct option is B.
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How do the oceans affect the climates of the world?
Explanation:
by absorbing solar radiation and releasing heat is needed to keep making the atmospheric circulation, and by releasing aerosols influence cloud cover, by emitting the most water that falls on land as rain.
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Which outcome would most likely suggest that data collected is unreliable?
Other scientists conduct the same study but find different data.
The data is put on a scatterplot but does not show any trend.
Each data point is considered by many scientists to be accurate.
Many tools were used in the same laboratory to measure the data.
Each data point is considered by many scientists to be accurate. This is answer.
PLEASE MARK ME BRAINLIESTI believe your answer is.. A.) Other scientists conduct the same study but find different data.
I hope this is correct and helps!
I need help with 5-10
Answer:
36.6 19.1 96.6 73.5 89.9 663
the statment "the worm is 2 centime=eters long" is an?
Answer:
Adjective
Explanation:
The worm is being described to be 2 centimeters long.
Explain what is meant by the terms habitat,community,environment and population
Answer:
environment -
all the conditions that surround a living organism. habitat - the place where an organism lives.
population -
all the members of a single species that live in a habitat.
community -
all the populations of different organisms that live together in a habitat.
Explanation:
Help me please!!! What does this picture mean
Answer:
i think a cell is zoomed in
Explanation:
which of these actions has contributed to the increase of greenhouse gases in the atmosphere?
A) Clearing forests
B) Excessive planting
C) Chopping wood
D) Watering crops
Answer:
A
Explanation:
Trees and other plants absorb carbon dioxide from the atmosphere as they grow. This is converted into carbon and stored in the plant's branches, leaves, trunks, roots and in the soil. Cutting down of trees without allowing them to regrow, the carbon stored is released to the atmosphere in form of carbon dioxide which contributes to as much as 30 percent of global greenhouse-gas emissions.
Need Help!!!Due today!!!!I will give Brainliest for the correct answer!!!!
Answer the questions below:
•Name 3 properties of carbon
•To make a new polymer, what process must you use?
•To separate the monomers from its polymer, what process must you use?
Answer:
• carbon is unreactive under normal conditions
• 3 isotopes
• atomic mass is 12.011 g.mol ^-1
•polymerization
•Hydrolysis
Explanation:
• basic facts that are found int he period table
• this process can only be used to make polymers
• this process is used to break down polymers to monomers
What is the difference between the attic and equator Environment
An attic environment is a hot and muggy place, with few fresh breezes coming in. Meanwhile, the equator is a very dry and low altitude location that has lots of fresh air and major wind currents constantly circulating through. This exchange of air allows for natural temperature regulation- warm air rises to the updrafts at equatorial latitudes and cold air sinks around Antarctica . At a higher latitude like the United States, there are fewer major winds like monsoons or cyclones to provide this necessary "push" for different atmospheric temperatures over time. With little variation in climate (weather) patterns, there is also less need for sweating as moisture evaporation cools down your skin (thermoregulation).
Explanation:
Answer these questions.
a. What is renewable source of energy?
b. What are different forms of energy?
c.What is non-renewable source of energy? Give some examples.
d.What are the various uses of electrical energy?
e. What is magnetic energy? Mention its uses.
f. Why is the sun regarded as the main source of energy?
Answer:
a) The resources which can be regenerated and replaced at the shorten period of time is called renewable source of energy.
b) The different forms of energy are:
1) Mechanical energy
2) Heat energy
3) Light energy
4) Chemical energy
5) Sound energy
6) Electrical energy
c) The resources which cannot be replaced shortly after they are finished is called non-renewable sources of energy. For example: coal, petrol, minerals etc.
e) The energy which affects the magnetic bodies is called magnetic energy .
differentiate between Angiosperms and gymnosperm
Answer:
Angiosperms are vascular plants bearing the seeds in fruits or mature ovaries whilst gymnosperms are other types of the plant which bears the seeds directly on the sporophylls but without any cover.
Explanation:
Examples of gymnosperms include cypress,pine, redwood, spruce and ginkgo.
Examples of angiosperms include apple, banana,peach, cherry and orange.
Also, angiosperms are seeds producing flowering plants whose seeds are enclosed within an ovary.
Gymnosperms are also seeds producing non flowering plants whose seeds are unenclosed.
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Cells are capable of reproducing themselves by cell division. For single celled organisms, cell division is essentially reproduction. For multicellular organisms, division is necessary for growth and renewal. Even though cell division is natural and necessary, what happens when the rate of cell division becomes too rapid and out of control? How can we get rid of such rapidly dividing cells in the human body?
Answer:
Here are 5 important things you should know about cancer cells:
1. Everyone has cancer cells in their body. These cells are not detected in routine tests until they have multiplied and grown to billions of cells.
2. Cancer cells are present in the body about 6-10 times in a person's lifetime.
3. When the immune system is healthy, cancer cells will be destroyed, preventing tumor growth and formation.
4. When a person has cancer, it means that he or she may be suffering from severe nutritional deficiencies or due to toxic environmental factors, unhealthy lifestyles and diets.
5. An effective way to fight cancer is to starve cancer cells by not providing them with the food they need to proliferate and grow.
"3 golden rules" help kill cancer cells:
1. Diet to prevent cancer
It can be said with certainty that there is no better way to keep your immune system healthy than with a reasonable and scientific diet. So ask yourself the question "Do you really have a reasonable diet to prevent cancer?". And here are the essential suggestions.
- Increase your diet with fresh vegetables, fruits, whole grains and foods high in fiber.
Eat more antioxidant foods: The fruits below are rich in antioxidants.
In addition, all vegetables and fruits contain a lot of vitamin A (carrot, papaya, tomato, sweet potato, pumpkin), vitamin C (orange, cherry, kiwi, strawberry), vitamin E (avocado, papaya). , cashews, peanuts, sunflower seeds, almonds...) are also foods with strong antioxidant capacity to help prevent cancer.
- Increase vitamin D supplementation.
Vitamin D is a special vitamin that is more important than all other vitamins because of its "universal" effect on the body's immune system. Its biological effects are related to the expression of more than 3000 genes in the body.
In addition to the extremely important role for the musculoskeletal system, the role of vitamin D in the prevention of many cancers and infectious diseases has been scientifically proven.
More than 90% of vitamin D in the body is synthesized in the skin under sunlight. Very little is absorbed from the diet, so the daily diet cannot guarantee the full amount of vitamin D needed by the body.
A recent study by a joint research team between the 108 Central Military Hospital and the University of Tuebingen (Germany) published in the journal BMC Infectious diseases showed that about 90% of healthy people are deficient in this vitamin. plasma vitamin D concentration <30 ng/ml).
Research also shows that there is a strong association between vitamin D deficiency and liver cancer in patients infected with hepatitis B. So the simplest way to ensure that you do not have a deficiency is to take vitamin D supplements. daily dose of 10-20 (µg/day) for all ages.
- Do not eat a lot of sugar and sweets because this is a food source that helps tumor growth. Sugar, not protein, is what tumors need to grow, so people with cancer still need the protein found in meat to boost their health against cancer. However, it should be noted that you should not eat a lot of red meat but should eat chicken and fish instead of beef and pork.
2. Increase physical activity
This is the most important principle of strengthening the immune system that anyone can do. The largest study conducted by the National Cancer Institute (USA) on more than 1.4 million people found that regular physical activity reduces the risk of 13 common types of cancer in humans.
The link between physical activity and reduced risk of many types of cancer can be explained by several key mechanisms:
- Strengthen the immune system, prevent the growth and spread of infectious agents.
- Physical activities help increase metabolism, improve circulation and help transport oxygen to all organs. Cancer cells must not grow in an oxygen-rich environment because oxygen can kill cancer cells.
Lowering levels of hormones such as insulin, estrogen and growth factors are thought to be closely related to cancer formation and development.
- Control weight, prevent obesity: Obesity is a leading risk factor for many types of cancer, metabolic disorders, cardiovascular diseases... It is estimated that more than 500,000 cancers are diagnosed each year. obesity-related diagnoses.
Increased blood flow to organs such as the liver, kidneys and intestines enhances the efficient elimination of waste products and toxins that can be potential causes of cancer from the body.
1) T/F (circle one). Viruses ONLY affect animals.
If false, write the correct statement in the space below.
Answer: False
Explanation: there are a Varity of viruses that affect plant life such as the mosaic virus which causes discolored splotches on the plants leaves.
Explain how observation, interpretation, and explanation are important to the study of science.
Answer:
Observation is essential in science. Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories. Scientists observe in many ways – with their own senses or with tools such as microscopes, scanners or transmitters to extend their vision or hearing.
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Compare a virus to a unicellular organism. (1 point)
O Viruses need energy, unicellular organisms do not need energy.
O Unicellular organisms have a cell membrane made from a lipid bilayer, viruses have a protein coat
O Viruses reproduce through asexual reproduction; unicellular organisms need a host cell,
O Neither unicellular organisms nor viruses respond to stimuli.
Answer:
differences : Viruses need energy while unicellular organisms donot need energy
Unicellular organism has cell membrane but virus has protein coat.
Unicellular organisms have a cell membrane that is made from a lipid bilayer whereas viruses have a protein coat which is called capsid. Unicellular organisms reproduce through asexual reproduction whereas virus need a host cell for their survival because virus use the cell engine to extract food for their survival so it is conclude that unicellular organisms have cell membrane but virus has protein coat.
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5 things that cellular respiration and photosynthesis have in common
Which of the following statements describes how a balance obtains a measurement?
A. An object is placed on one side and weights are placed on the other side
until the two dishes are even.
B. A ruler is placed next to an object, and its length is noted.
C. An object is placed in a cylinder, and the water displaced gives the
measurement
D. The sides of an object are measured and multiplied to get the final
measurement
Answer:
sorry if wrong
Explanation:
b I think sorry if wrong
Answer: its a.) an object is placed one one side and weights are placed on the other side until the two dishes are even
Explanation:
Match each term to its description.
Match
Term
Definition
Conservation
A) The process of wearing down, becoming weaker
Degradation
B) Animals eating vegetation at a rate faster than it can grow back
Exploitation
C) Saving of a resource by managing how it is used
Overgrazing
D) Unfair and unequal treatment of people or use of resources
The process of wearing down a substance leads to degradation, and the process of eating vegetation by the animal at a faster rate is called overgrazing. Thus, the correct options are A. 2, B. 4, C. 1, and D. 3.
What is degradation?Degradation is the process of wearing down the substance by the action of air, water, etc. which leads to erosion and weakening resulting in the formation of smaller particles. Hence, A. 2 is correct.
When the animals eat vegetation at a higher rate than their production causes the loss of food and decreases the carrying capacity in the process called overgrazing. Hence, B. 4 is correct.
Conservation is the process of saving resources by their effective uses, and exploitation is the unequal and unfair treatment and use of the resources and organisms. Hence, C. 1, and D. 3 are correct.
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WILL GIVE BRAINLIEST TO WHOEVER IS RIGHT.
9.967×10^-5 to standard notation
Answer:
0.00009967
Explanation:
bbbbbbbbbbbbbbbbbbbbb
Carbon atoms are able to
give off electrons to form negative carbon ions
bond with other carbon atoms to form long chains
gain four extra electrons to form positive carbon ions
form five single covalent bonds with their valence electrons
Answer:
Gain four extra electrons for form positive carbon ions
Identify the organelles in the cell to the right.
A
B
C
D
E
F
Answer:
A=Vacuole
B=chloroplasts
C= cell membrane
D= endoplasmic reticulum
E= nuclear envelope / or nucleus in general
F= The cell wall.
what makes the pelvic girdle more rigid than the pectoral girdle
Explanation:
The pectoral girdle is weaker than the pelvic girdle because the pelvic girdle is the primary weight bearing and locomotory structure for the body through the attachment of the legs where as the pictoral girdle is the site of the arm attachment which is more for dexterity
HELPP!! (40 pts) Explain how the earth's core has impacted human life. Use evidence from the
text to support your answer.
Answer:
The earth’s core affects the shape of the ground we
walk on.
Explanation: The earth’s core is responsible for
not only the Rocky Mountains, but the formation of cities and societies that have lived there for
generations, such as Rocky Mountain National Park. It’s responsible for mountains that serve as barriers,
bringing to life divisions in culture unique to each side, while also posing a challenge to be crossed and
burrowed into, spurring on scientific innovation in the process.
The Earth's core has impacted human life in a variety of ways. As it is responsible for the generation of the earth's magnetic field and contains a history of the planet.
What do you mean by the Earth's core?The Earth's core may be defined as the innermost layer of the Earth which is very hot and dense.
The Earth's core is responsible for any geographical locations like mountains, deserts, biodiversity hotspots, rivers, etc. It gives a structural appearance to the Earth. Human life is widely impacted and depends on all of these locations for their needs. All these geographical locations determine the climate of that particular area which is responsible for those people who are living at that location. Human life takes all its requirements from this core surface only.
Therefore, the Earth's core has impacted human life in a variety of ways. As it is responsible for the generation of the earth's magnetic field and contains a history of the planet.
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Is the stomach anterior or posterior to the navel?
Answer: Anterior
Explanation:
Which of these correctly demonstrates the biomolecule with its function?
A)
steroids; separate the cytoplasm from the environment
B)
waxes, prevents water loss and repels water
c)
triglycerides; make up sex hormones
D)
phospholipids, store energy
Answer:
B) Waxes, prevents water loss and repels water
Explanation:
Waxes, steroids, phospholipids, and triglycerides are types of lipids. All of them are made of Hydrocarbon chains that are hydrophobic.
Triglycerides (fats) - Storage molecules for the body's energy
Steroids - Sex hormones and cholesterol
Phospholipids - Cell membrane (Separates cytoplasm from the environment)
Therefore, Answer choice B) Waxes, prevents water loss, and repels water, is the only answer that correctly matches with the provided answers.
about paramosium? explain it
Answer:
Paramecium is a genus of eukaryotic, unicellular ciliates, commonly studied as a representative of the ciliate group. Paramecia are widespread in freshwater, brackish, and marine environments and are often very abundant in stagnant basins and ponds
Paramecium is a unicellular organism with a shape resembling the sole of a shoe. It ranges from 50 to 300um in size which varies from species to species. It is mostly found in a freshwater environment.
It is a single-celled eukaryote belonging to kingdom Protista and is a well-known genus of ciliate protozoa.
As well, it belongs to the phylum Ciliophora. Its whole body is covered with small hair-like filaments called the cilia which helps in locomotion. There is also a deep oral groove containing not so clear oral cilia. The main function of this cilia is to help both in locomotion as well as dragging the food to its oral cavity.
Which term best describes this step of the investigate process
Answer:
experiment
Explanation:
