Answer:Fossils that are abundant in earlier rock layers are simply not present in later rock layers. A wide range of animals and plants suddenly died out, from tiny marine organisms to large dinosaurs.
Species go extinct all the time. Scientists estimate that at least 99.9 percent of all species of plants and animals that ever lived are now extinct. So the demise of dinosaurs like T. rex and Triceratops some 65 million years ago wouldn't be especially noteworthy—except for the fact that around 50 percent of all plants and animals alive at the same time also died out in what scientists call a mass extinction.
Explanation:
Which best describes Earth’s crust?
It is stationary and unable to move.
It is thicker than the mantle and the core.
It is located between the outer and the inner core.
It is composed of continental and oceanic plates.
Answer:
D
Explanation:
It is composed of continental and oceanic plates.
A science class breaks into four groups and tests the pH of the soil surrounding the school. Each group goes to an area that is three meters squared (3m 2) in size and tests the soil four different times within that square. The data collected is then placed into a table for everyone to see as shown below.
Four students draw the following conclusions from the data:
Student 1: Group D’s data should be discarded because it is not similar enough to the other groups' data.
Student 2: There must be something near the parking lot that causes the pH of the soil to be higher and the class should design a new experiment to determine what it may be.
Student 3: There are definitely more magnesium ions in the soil near the parking lot, and that is why the pH of the soil is higher there.
Student 4: The pH of the soil in the ball field should be measured again because no two readings were identical.
Which student’s conclusion is scientifically valid based on the data in the table above?
A. Student 1
B. Student 2
C. Student 3
D. Student 4
Answer:Student 2
Explanation:
The conclusion of student 2 is scientifically valid based on the data in the table above. Thus, the correct option for this question is B.
How the pH of the soil is measured?The pH of the soil is measured with the help of a pH meter. The soil from a particular area is mixed with water and other chemicals in order to make a solution, then by utilizing a pH meter, an accurate pH of that region of the soil is measured successfully.
According to the conclusion of student 2, there must be something near the parking lot that causes the pH of the soil to be higher and the class should design a new experiment to determine what it may be. This is because the pH of the edge of the parking lot is significantly high as compared to other areas that surround the school.
Therefore, the conclusion of student 2 is scientifically valid based on the data in the table above. Thus, the correct option for this question is B.
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Among us code:
SRCSMF
Answer:
You say my answer...I think. ALL my answers got deleted. All...60. of. them.
Explanation:
How can I describe the yearly temperatures of the Tundra biome?
Answer:
The arctic tundra has average winter temperatures of -34° C (-30° F) and average summer temperatures of 3° to 12° C (37°to 54° F).
Explanation:
Answer: Very cold all year or very hot
Explanation:
I learned it last year i think
List 4 clues that show how Africa and South America were once connected.
Answer:
Geological “fit” evidence is the matching of large-scale geological features on different continents. It has been noted that the coastlines of South America and West Africa seem to match up, however more particularly the terrains of separate continents conform as well. Examples include: the Appalachian Mountains of eastern North America linked with the Scottish Highlands, the familiar rock strata of the Karroo system of South Africa matched correctly with the Santa Catarina system in Brazil, and the Brazil and Ghana mountain ranges agreeing over the Atlantic Ocean.
Another important piece of evidence in the Continental Drift theory is the fossil relevance. There are various examples of fossils found on separate continents and in no other regions. This indicates that these continents had to be once joined together because the extensive oceans between these land masses act as a type of barrier for fossil transfer. Four fossil examples include: the Mesosaurus, Cynognathus, Lystrosaurus, and Glossopteris.
Explanation:
MAKE ME BRAINLIEST!!!
PLSSSSSSSSSS Which best explains why a person can tell the difference between a whisper and a yell?
Sound waves turn into chemical signals that indicate certain sounds.
Different vibrations in the ear cause the brain to interpret different sounds.
The fluid in the cochlea picks up electrical signals for the intensity of sound.
The eyes see what is making the noise and help the brain process the sound.
Answer:
The difference is the louder the sound the bigger the waves and your ears collect the sound waves and brings it to you brain
Explanation:
ILL GIVE BRAINLIEST!!
Hello! Could someone please help me? Thank you!
Answer:
A
Explanation:
You can see that air pollution increases sharply between those two days.
Answer:
a. between days 3 and 4
Explanation:
that was you big increase
The results of Mendel's experiments supported the idea that offspring inherit traits that are a "blend/mix" of the traits of their parents.
Question 1 options:
True
False
An organ within an organism accomplishes tasks. To engage in these tasks, an organ typically requires
energy provided by other organisms.
B
interaction with other organ systems.
С
communication with other organisms.
D
segregation from other organ systems.
Answer:
I think that it is the first one :)
Explanation:
Pls pls tell me if im wrong, ill do my best to fix it
B. Interaction with other organ systems.
What is an organ ?An organ within an organism performs specific tasks to maintain the overall health and function of the organism. To accomplish these tasks, an organ typically requires interaction with other organ systems within the organism.
For example, the digestive system works in tandem with the circulatory system to transport nutrients to the cells, while the respiratory system works with the circulatory system to deliver oxygen to the body. By working together, the different organ systems help to maintain the overall health and function of the organism.
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We can think of electromagnetic waves as a kind of ongoing message being sent out by the universe. Humans are able to naturally access only a portion of this message.
What information from the passage best supports this statement?
a
The waves emitted by our physical world make it possible for us to communicate over vast distances.
b
The human eye is only sensitive to a portion of the electromagnetic spectrum.
c
Without light, we wouldn't be able to process the visible world.
d
Mankind has invented tools to harness the information contained within electromagnetic radiation.
Option (B) the human eye is only sensitive to a portion of the electromagnetic spectrum (visible lights) best supports above statement.
What are electromagnetic waves?Electromagnetic radiation is made up of electromagnetic field waves that travel through space carrying electromagnetic radiant energy. These waves are carried by electromagnetic radiation. Radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays are all components of this spectrum. The electromagnetic spectrum is made up of all of these different types of waves.
We can only see a small portion of the electromagnetic radiation that exists, which is the portion that we refer to as visible light. However, all electromagnetic radiation is light. These cone-shaped cells in our eyes function as receivers and are tuned to the wavelengths that are present in this particular narrow band of the electromagnetic spectrum.
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First answer gets brainly!
What are two phases of a waxing moon, and how do they appear?
Answer:
The waxing of the moon can be noticed when the moon appears larger each night. A waxing moon has two phases, namely a waxing crescent and a waxing gibbous. During a waxing crescent, a thin crescent in the west part of the moon is visible. This indicates that the moon travels east in the sky. On the contrary, a waxing gibbous occur when more than half of the moon is visible. This indicates that the moon is almost halfway through its cycle.
Explanation:
Answer:
waxing gibbous waxing crescent
Explanation:
(10 points) Marine Biology. needed as soon as possible
Match the kelp ecosystem to the organisms that reside there.
1. oarweed
2. nudibranch
3. sponge
4. otter
5. sea urchin
6. rockfish
match each one to its ecosystem,
Ecosystem 1: Kelp Canopy
Ecosystem 2: intermediate Region
Ecosystem 3: Dark Seafloor
Oarweed and otter are present in the Kelp canopy, nudibranch, sponge, and sea urchin are present in the intermediate region, and rockfish is present in the dark seafloor.
What are Marine ecosystems?Marine ecosystems are the aquatic environments with very high levels of dissolved salts, such as the ones which are found in or near the ocean areas. Marine ecosystems are defined by their unique biotic and abiotic factors.
Kelp canopy are the underwater areas with a high density of kelp that covers a large part of the world's total coastlines. Oarweed and otter are found in kelp canopy.
Intermediate region of the marine ecosystems contains nudibranch, sponge, and sea urchin. Dark seafloor contains rock fishes.
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Only answer if you have an answer to one of the questions. Thank you.
Over time, a shallow pond fills with plants, such as duckweed and cattails. These plants-
A:will die off quickly in the shallow water.
B:support ecological succession from pond to marshland.
C:will grow into larger trees as they mature.
D:eventually will dry out and create a fire hazard.
ASAP
Answer:
the answer you are looking for is A. they will die off quickly in shallow water
Explanation:
because they are larger plants that do not need a lot of sunlight but needs a lot of oxygen and a shallow pond does provide that oxygen needed but it pushes to much sunlight.
hope this helped some
how are plant cells and human cells different?
a. human cells need food, but plant cells do not.
b. human cells need energy, but plant cells do not.
c. plant cells make their own food, but human cells do not.
d. plant cells make their own energy, but human cells do not.
Answer:
C- Plant cells make their own food, but human cells do not.
Explanation:
Animal cells must take food in from some other source. Plants, on the other hand, have the ability to make their own food through a process called photosynthesis. In essence, the plant cell uses the energy in sunlight to combine carbon dioxide and water to make molecules of glucose and to release oxygen.
D is wrong because the human body uses three types of molecules to yield the necessary energy to drive ATP synthesis: fats, proteins, and carbohydrates. Mitochondria are the main site for ATP synthesis in mammals, although some ATP is also synthesized in the cytoplasm.
A is wrong because plant cells obtain energy through a process called photosynthesis. Secondly, that energy is used to break down carbon dioxide and form glucose, the main energy molecule in plants. Plants, algae and some bacteria use photosynthesis to create energy used for growth, maintenance and reproduction.B is wrong because food provides building materials for your body. Your body needs building materials so it can grow and repair itself. Specifically, it needs these materials to produce more cells and its components. Food contains substances that help control body processes.Which global wind belt moves out air masses across the United States?
Answer:
B
Explanation:
hope you have a good day
I found the answer on
What is the biggest animal that lives underground?
Answer:
Bears
Explanation:
Ik that you might think that they live in caves, but they can live in snow burrows, and dug-out earthen as their dens.
Hope this helped :)
The heart is an example of several similar tissues working together to do a specific job for an organism, which level of organization represents the heart?
А cell
B
tissue
C
organ
D
organ system
Compare the structures for genetics with every day objects. Must include the words: genes, DNA, chromosomes, and nucleus.
Answer:
Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.
Only answer if you have an answer to one of the questions. Thank you.
Answer:
4.
An internal stimulus is a stimulus that comes from inside an organism. You may have experienced an internal stimulus of hunger after a long day at school, and this prompts you to eat some food in order to regain needed energy
Please help and thank you
In which investigation would it be BEST to use observational data obtained outside of a laboratory rather than empirical data from controlled experiments?
an investigation to determine the amount of oxygen that an animal consumes while sleeping
an investigation to determine the genetic code of a harmful bacteria
an investigation to determine the structure of a protein
an investigation to determine the feeding habits of a species of bird
An investigation to determine the feeding habits of a species of bird
employs the use of observational data obtained outside of a laboratory.
Observational data outside of a laboratory is best suited for feeding habits
of a bird because it requires lower degree of control over the environment.
Feeding pattern doesn't require any special technique which is why it can be
done on the field.
Other options require the use of higher degree of control over the
environment to ensure accurate results are derived.
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Help please I will give brainliest if it is a right and valid answer with atleast 2 sentences. Thanks so much
Explanation:
Lucille's cells need oxygen. In order for cells to properly function, they need to be oxidized. If Lucille's respiratory system is not working then her body cannot receive the oxygen that it needs in order to send to her blood cells. The circulatory system pumps Lucilles's blood around her body but if there is no oxygen, Lucille's cells/heart cannot properly function, this making it difficult for her to play soccer.
Only answer if you have an answer to the question. Thank you.
Answer:
They have their own environment. Structure how to live and surviving. Thats an organization
What are 3 reasons deforestation is an issue for animals?
Answer:
- Animals live in the trees
- Animals eat off of tree
-Animals breed in trees
Explanation:
Answer:
1. They have less territory
2. With less space, populations decline.
3. Some animals need trees to survive.
Explanation:
1. Some animals, like wolves, have huge territories that span over miles of land. Deforestation would cause predators to fight over who gets the remaining space.
2. Populations cant thrive if theres no where to have offspring.
3. Animals depend on trees for shelter and food. If there are no more trees, primary and secondary consumers would suffer.
7th grade science help pls
Answer:
d
Explanation: the genes carry what is needed to change, and the cells change due to what is happening in the genes
Answer:
with what
Explanation:
becuse how am i going to help
please help me this is due soon :(( giving brain liest for whoever does it right, and it does it in there own words, ITS OK IF A LITTLE IS FROM THE INTERNET :D pls help im giving brain liest :)
Describe a DNA mutation and how it can affect an offspring.
The skeleton is divided into two categories. The Axial Skeleton consists of the cranium, vertebrae, and ribs, while the Appendicular Skeleton consists of other bones, including the bones in your _________.
Back
Ear
Arms and Legs
Head
Please Answer
Answer: i would say arms a legs!
Sorry if this is wrong also :(
Explanation: But i hope this helps you! Sorry if this is wrong also :(
_____ is when the amperage put over a wire or circuit is more than it can handle.
Answer:
It should be energy
Explanation:
When one draws more electricity than a circuit can safely handle an electrical circuit overload takes place.
What is amperage?A unit of measure of the rate of electron flow or current in an electrical conductor is referred to as an ampere.
When one draw more electricity than a circuit can safely handle an electrical circuit overload takes place.
Thus, the answer for the given blank is electric overload.
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What happens when icebergs melt?
Answer:
Melting icebergs will cause the sea level to rise. Icebergs are already floating in the ocean, so melting will not raise the sea level. Melting of land-based ice (such as glaciers) will raise sea level.
Explanation:
