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3 years ago

Which of the following is evidence that dolphins evolved from four legged mammals not fish

Biology

1 answer:

oksian1 [2.3K]3 years ago

3 0

Answer: Dolphins are mammals

Explanation: Research have made scientists believe that dolphins evolved from a hoofed mammal called Mesonyx and went back into the sea fifty million years ago.

Dolphins shows signs of hind protrusions but disappeared before birth. (theory)

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Each sentence describes an interaction between two of Earth’s spheres. Match each sentence with the spheres that are interacting

galina1969 [7]

The answers would be the following:

Geosphere and hydrosphere - water vapor condenses on a glass.

Hydrosphere and biosphere - Grady swims in the ocean.

Biosphere and atmosphere - Lena takes a deep breath

Atmosphere and geosphere - gusty winds weather sandstone in the desert.

If you'd like to know why:

Geosphere involves the solid part of the Earth, so that would mean it involves the rocks, land, and the like.

Hydrosphere involves water, your clue there would be hydro, which means water.

Atmosphere involves the air around us, which includes winds.

Biosphere refers to the biotic components. Bio means life, so we consider living things here.

Now all those spheres interact with each other, and it is through this interactions that our world is formed and how our Earth is able to sustain life.

Taking into consideration the features of each sphere, you can see that Grady is a living organism and the ocean is made up of water.

Hence, hydrosphere and biosphere are interacting.

Lena is a living organism, and she is breathing in air.

Hence, biosphere and atmosphere are interacting.

Water vapor is made up of water, and glass is a solid found on Earth. (Not really a good example of interaction between these two spheres)

Hence, hydrosphere and geosphere are interacting. 

Lastly, gusty winds is part of the atmosphere and sandstone is a type of rock.

Hence, Geosphere and atmosphere are interacting.

4 0

3 years ago

Read 2 more answers

Describe the difference between unicellular and multicellular organisms

viva [34]

Multicellular organisms can be much larger and more complex. This is because the cells of the organism have specialised into many differenttypes of cells such as nerve cells, blood cells, muscle cells all performingdifferent functions.

7 0

3 years ago

Using complete sentences, define a habitat and provide supporting details

shutvik [7]

Answer:

A habitat is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive. ... The main components of a habitat are shelter, water, food, and space. A habitat is said to have a suitable arrangement when it has the correct amount of all of these.

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3 years ago

MAIN DIFFERENCE BETWEEN EUKARYOTIC AND PROKARYOTIC CELLS

serg [7]

Answer:

eukaryotic cells have a nucleus whereas prokaryotic cells do not

4 0

3 years ago

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Soil organisms, such as mycorrhizal fungi, impact the rate of succession in ecosystems. Mycorrhizal fungi have a mutualistic rel

Firlakuza [10]

Answer:

The amount (number) of mycorrhizal fungi

Explanation:

In a scientific experiment/study, the independent variable is the variable that isn't changed by other variables, while the dependent variable is the variable that is being measured during the experimental procedure. The independent variable is manipulated by the researcher (in this case, the amount of mycorrhizal fungi), thereby affecting the dependent variable (in this case, grass growth). In consequence, a variable is dependent because it 'depends' on the independent variable.

3 0

3 years ago