A scientist discovers a fossil of an ancient reptile.the reptile species appears in the fossil record .what model of evolution does this represent
Answer:
Fossils are the remains of plants, animals, fungi, bacteria, and ... Studying oyster fossils can help paleontologists discover how long ... Using fossil evidence, vertebrate paleontologists deduced that pterosaurs, a group of flying reptiles, ... Some ancient scientists did understand what fossils
Explanation:
Charles Keeling's work at the National Oceanic and Atmospheric Administration (NOAA) Mauna Loa Observatory
paved the way to understanding how human activities can lead to global warming.
Which greenhouse gas did Charles Keeling measure at the observatory?
A)
carbon monoxide
B)
methane
C)
nitrous oxide
D)
carbon dioxide
Answer:
D) carbon dioxide
Explanation:
Carbon dioxide (CO2) is the most important greenhouse gas which is known to absorb heat that would otherwise be lost to space. It has been shown that CO2 causes approximately 80% of global warming. Different human activities, but especially the burning of fossil fuels, are the main cause of global warming. It has been estimated that 40 billion metric tons of CO2 produced by human activities are being discharged into the atmosphere annually. Other human activities associated with global warming by increasing the concentration of CO2 in the atmosphere include deforestation and cement production.
3. Why do you think using a
pyramid shape is a good model
to show how energy moves
through an ecosystem?
TOUR
I
Answer: An energy pyramid shows the flow of energy at each trophic level in an ecosystem. A pyramid shape is used because energy is lost at each trophic level when organisms use it up
Explanation:
A team of students from UGA are completing a field study to determine the impact the American alligator has on ecosystems in places such as the Okefenokee Swamp in South Georgia over a 3-month period. In one area, they have removed the alligators and in another area they have left the alligators. What is the hypothesis the students are testing?
A.
If the American alligator is a keystone species, then the ecosystem with alligators absent will be healthier and contain greater biodiversity.
B.
If the American alligator is a keystone species, then the ecosystem with alligators present will be healthier and contain greater biodiversity.
C.
If the American alligator is a tertiary consumer, then the ecosystem with alligators present will contain fewer primary producers.
D.
If the American alligator is a tertiary consumer, then the ecosystem with alligators absent will contain more primary producers.
Answer:
B
Explanation:
100% B
If the American alligator is a keystone species, then the ecosystem with alligators present will be healthier and contain greater biodiversity.
The diversity of living organisms on Earth, including plants, animals, microbes, and fungi, is referred to as biodiversity.
The Earth's biodiversity is so diverse that many species are still undiscovered, but because of human actions, many species are facing extinction, endangering the Earth's amazing biodiversity.
The vast variety of life on Earth is referred to as biodiversity. It can be applied more precisely to all the species found in a certain area or environment. Every living creature, including plants, microorganisms, animals, and people, is referred to as biodiversity.
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I need help with this pls is for today!!!!
DONT PUT THE LINK THAT EVERYONE IS PUTTING PLEASE
Robert Hooke looked at a sliver of ______ through his microscope, where he noticed "pores" or "cells" in it. *
Answer:
cork
Explanation:
please mark this answer as brainliest
Plants are organized into cells, tissues, organs and organ systems just like animals.
A. True
B. False
Answer:
A. True
Explanation:
Hope it helps you in your learning process
Which statement describes combined forces that are balanced?
*They result in a net force less than 0 Newtons
*They result in a net force of 0 Newtons
*They result in a net force greater than 0 Newtons
Answer:
option b is right answer
Groundwater is taken up through a tree's roots so the tree can grow. Which sequence correctly
shows how the water the plant is using will cycle though the water cycle and become groundwater
again?
respiration → condensation → precipitation → groundwater
condensation precipitation groundwater → transpiration
transpiration → condensation → precipitation → groundwater
condensation → precipitation → groundwater → respiration
Answer:
condensation, precipitation, groundwater → transpiration
Explanation:
I hope it will help you
This is leaving an area of birth or activity for another area. Movement causes a change in
population. Leaving is analogous to emigration.
Answer:
Yes.
Explanation:
Yes, Leaving is analogous to emigration because in emigration the person leaves the country permanently and settles in another country for the job. There are many reasons of emigration of a person such as job opportunities in another country, warfare in the country etc. In emigration, the person leaves the country permanently and settles in another country to made his social status better in the society. There are good job opportunities that force people to leave their country.
EASY POINTS‼️‼️‼️
How can the history of Mount Rainier's eruptions help you decide whether hiking around Mount Rainier is safe?
The history of Mount Rainier's eruptions can help you decide whether hiking around Mount Rainier is safe by providing information about the volcano's past activity, eruption patterns, and potential hazards.
The history of Mount Rainier's eruptions provides valuable insights into the volcano's behavior and can help assess the safety of hiking around the area. By studying the volcano's eruption history, scientists and authorities can gather data on the frequency, magnitude, and types of eruptions that have occurred in the past.
This information is crucial for understanding the potential hazards associated with the volcano. For example, if Mount Rainier has a history of frequent and large explosive eruptions, it may indicate a higher level of risk for hikers due to the potential for ashfall, pyroclastic flows, or lahars (volcanic mudflows) that can pose dangers to human life.
Additionally, analyzing the timing and recurrence intervals of past eruptions can help estimate the likelihood of future eruptions. If the volcano has been relatively inactive for an extended period, it may suggest a lower immediate risk for hikers. However, it is essential to consider the potential for future eruptions and monitor any signs of volcanic unrest or changes in activity.
Furthermore, studying the extent and distribution of past volcanic deposits, such as lava flows or ash layers, can help identify areas that are more prone to hazards. This information can be used to establish exclusion zones or restrict access to certain hiking trails that may be closer to potential hazards.
Ultimately, by considering the history of Mount Rainier's eruptions and the associated hazards, authorities can make informed decisions regarding the safety of hiking around the volcano. It is crucial for hikers to stay updated with the latest information from local authorities, volcanic monitoring agencies, and park management to make responsible choices and ensure their safety when exploring the area.
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how do some cells beomce brain cells and others become skin cells, when the dna in all the cells is exactly the same. In other words, if the instructions are exactly the same, how does one become a brain cell and another a skin cell?
Answer:
In other words, if the instructions are exactly the same, how does one cell become a brain cell and another a skin cell? it has the ability to turn off genes. The cell grows, makes a copy of its DNA, and prepares to divide into two cells.
Explanation:
hope this helps you.
Answer:
Red blood cells make the different types of dna in the skin to convert and mutate the other skin cells
Explanation:
I had this question
After a volcano erupts and destroys an ecosystem, a few organisms are able to begin growing from the decaying organic matter left behind. What do we call those organisms that are able to grow in little or no soil that first appear?
Answer:Pioneer species
Explanation: Pioneer species are the first species to live in an area after it has been destroyed as mentioned.
Please help me. no links i report you
Answer:
Option b
Explanation:
An unbalanced force moving everyone in Daniel and Maria's direction
What happens to the blood pressure when the blood vessels get longer?
Answer:
:)
Explanation:
The main artery from the heart (aorta) becomes thicker, stiffer, and less flexible. This is probably related to changes in the connective tissue of the blood vessel wall. This makes the blood pressure higher and makes the heart work harder, which may lead to thickening of the heart muscle (hypertrophy).
^ the question is in the picture above
two of the four principal classes of organic compounds are proteins and nucleic acids. what is the relationship between proteins and nucleic acids?
Answer:
Nucleic acids contain the genetic information to make proteins.
Identify three factors that could keep the human population from
reaching its carrying capacity.
Answer:
help
Explanation:
The phylum for invertebrate animals with jointed legs is Arthropoda.
The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages. Many familiar species belong to the phylum Arthropoda—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water (Fig. 3.72).
Which situation is a result of geotropism?
Select one:
a. Gravity pulls down on all parts of a plant.
b. Leaves are supported on strong stems.
c. A plant falls down when it wilts.
d. A stem turns to grow upward against gravity.
In the past, Native American Indians buried dead fish along with corn seeds. This technique was used because the decomposing dead fish would:
Answer:
Give nutrients for the corn seed to grow
Explanation:
The native Americans were using fish as fertilizers. Since fish fertilizer enhances soil quality, it also enhances soil productivity by supplying the essential nutrients for crop growth Fish fertilizers have blister nitrogen as well as the essential nutrients phosphorus as well as potassium.
This technique became popular when Native Americans taught the colonists such techniques of surviving in wilderness.
Do this and I'll bark for you:)
(Just type out the info please)
Create a digital table with the subtitles Body systems. Function, Organs and be able to describe all 12 body systems. There are 3 organs that need to be listed.
Answer:
body systems include the skeletal, which supports and moves body and Protects internal organs Mineral storage Blood formation, nervous, which coordinates activities of other organ systems Responds to sensations, the muscular, Locomotion Heat production, the respiratory, which has a Oxygen/carbon dioxide exchange, the endocrine, which regulates body functions by chemicals (hormones), immune system, which is a complex network of cells and proteins that defends the body against infection, cardiovascular / circulatory, which will Transports oxygen and nutrients to tissues, and removes waste produce, the urinary, which will eliminate wastes and regulates pH and volume of blood, and the integumentary system, which is protecting the body from invasion by microorganisms, chemicals, and other environmental factors, and the reproductive, that produces germ cells (eggs and sperm), and is the Environment for growth of fetus (female) and digestive systems.
Some organs include The brain (controls center of the nervous system and is located within the skull), The lungs, you use to hold air in, then let out, The liver, that regulates most chemical levels in the blood and excretes a product called bile. The bladder, which holds urine, The kidneys, which is a very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances into the bloodstream. The heart, which pumps blood and is protected by your skeletal system, The stomach, which will emit a special acid to help digest food before it goes to the intestines, and The intestines, which you use to digest your food.
hope this helps!
Using the Karyotype above, what chromosome has an error?
1
21
X
Y
Answer:
21
Explanation:
there are supposed to be 2 chromosomes, not 3. This person has down syndrome.
Which two inferences about the chipmunk population can be supported with the data gathered by the biologist?
Answer:
The amount of food in the area decreased, causing more chipmunks to
survive to reproductive age.
Explanation:
Hope this helps :)
Chipmunks in later generations showed greater genetic diversity than previous generations, allowing for a greater survival rate in later generations. Individual chipmunks changed their genetic makeup and became more successful in the environment. The correct options are R and S.
What is genetic diversity?Genetic diversity refers to the total number of genetic traits that make up a species' genetic composition.
It varies greatly depending on the number of species present as well as across species, and it can be linked to a species' longevity.
DNA contains all the biological information and variety required to sustain life on our planet.
Genetic variety is referred to as this. It improves a species' and population's resistance to maladies, pests, climatic changes, and other pressures.
According to the findings, Chipmunks had a higher genetic variety in later generations than in earlier generations, which allowed for a higher survival rate in later generations. Individual chipmunks altered their genetic make-up and improved their chances of survival.
Thus, the correct options are R and S.
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Your question seems incomplete, the probable complete question is:
A biologist studies a population of chipmunks. Some of the biologist’s
findings are shown.
Years 1 – 20:
• The population remains below
125.
• Less than half of newborn
chipmunks survive to adulthood.
• Competition for food and
resources limits population
growth.
Year 21 and beyond:
• Ninety percent of newborn
chipmunks survive to adulthood.
• The population increases to over
200 chipmunks.
M. The amount of food in the area decreased, causing more chipmunks to
survive to reproductive age.
P. Chipmunks in later generations showed greater genetic diversity than
previous generations, allowing for a greater survival rate in later generations.
R. Chipmunks migrated from one country to another country to increase the
number of chipmunks in the studied area.
S. Individual chipmunks changed their genetic makeup and became more
successful in the environment.
T. The number of predators in the area decreased, so more chipmunks were
able to survive.
Although strychnine is colorless, it has a very strong bitter taste.
A.True
B.False
Which is a pollutant associated with high-tech gadgets in landfills?
A. Carbon Dioxide
B. Oxygen
C. Lead
D. Nitrogen
The pollutants associated with the high tech-gadgets or e-waste include mercury, lead, cadmium, etc. So the correct answer is option C.
An electronic device that has reached the end of its usable life cycle is called as the electronic waste or the e-waste. The electronic waste contains a lot of toxic compounds inside them and should be handled carefully because this e-waste releases the toxic pollutants in the environment which can cause air pollution and also has an impact on respiratory health.
Burning of e-waste can release fine particles (pollutants) into the enviroment which can cause chronic diseases and cancers as well.
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WILL GIVE BRAINLIEST IF CORRECT
The two mice pictured below are genetically identical. How were they produced?
Answer:
Both of the mice had the same allels by the parents (EE)
Explanation:
True or false: With enough changes in a gene and enough time, two different species can form from one species if a physical barrier separates them
Cuando pasa una molécula de una zona de menor concentración de sustancias a una zona de mayor concentración, el transporte implicado es
Answer:
Transporte activo.
Explicación:
El transporte activo ocurre cuando una molécula se mueve de un área de menor concentración de sustancias a un área de mayor concentración. Los transportes activos utilizaron energía en forma de ATP para mover moléculas en contra del gradiente de concentración. Es lo opuesto al transporte pasivo en el que no se requiere energía para mover moléculas de una región a otra. La principal razón de que ocurra el transporte activo es que mueve moléculas en contra del flujo de difusión. En difusión, la molécula se mueve de un área de mayor concentración a un área de menor concentración.
Several people have to take an ill family member to the doctor to be diagnosed and treated for sickness. Which disease can be treated by taking antibiotics?
a.panic attacks, caused by stress
b. ringworm, caused by a fungus
c. measles, caused by the Paramyxovirus
d. strep throat, caused by Streptococcu s bacteria
