The function of proteins is to provide energy for the cells. * True False

Describe the characteristics of a river that would be a good source of freshwater (2-3 sentences)

Anton [14]

A river that comes from rain, glaicers etc would be a good example of fresh water rivers. Cause the water is coming from something that is most likely been unthouched by man or has been filterd and cleaned from minerals in the ground.

8 0

3 years ago

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What is the function of a circulatory system? a) It brings a transport liquid into close contact with all cells in the body. b)

Tomtit [17]

Answer:

The correct answer is a) It brings a transport liquid into close contact with all cells in the body.

Explanation:

The circulatory system helps in bringing the blood which is a transport liquid in close contact with the cells present in our body. This helps in gas exchange between cells and blood. The circulation of blood in the body occurs by the pumping of blood by the heart into arteries, veins, and capillaries.

This circulation of blood plays many other vital functions like transport of nutrients to the cells, transport of waste products from the cell to outside the body, transport of hormones, maintenance of body temperature, etc.

So all these processes become possible when transport liquid comes in contact with the cells. Therefore the right answer is a.

8 0

3 years ago

African cichlids are a group of closely related fish species. There are at least 500 known species living in three small lakes.

Nitella [24]

Answer: adaptive radiation

Explanation:

7 0

4 years ago

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Substances that can rust or

shusha [124]

Answer:

B. corrosive

Hope this helps!

3 0

3 years ago

1. How did dark matter affect the development of structures in the early universe?

-Dominant- [34]

Answer:

1. It seeded the development of galaxies

2. The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

3. Supernovae that are moving away at an accelerating rate.

Explanation:

1. How did dark matter affect the development of structures in the early universe?

It seeded the development of galaxies.

It seeded the development of quasars.

It cooled pockets of gas to form nebulae.

it became part of black holes

2. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.

The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

The percentage of ordinary matter has grown in scientists' estimates.

The percentage of dark energy has shrunk in scientists estimates

3. Which is evidence for the existence of dark energy?

Pulsars that seem to be moving closer at an accelerating rate.

Supernovae that are moving away at an accelerating rate.

Black holes that are expanding at a constant rate.

Galaxies that are rotating at a constant rate.

Please don't use these answer's to cheat they are to help only.

6 0

3 years ago