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mars1129 [50]
3 years ago
7

10 POINTS PLEASE HELP

Biology
2 answers:
andriy [413]3 years ago
8 0

Answer: 6. a

Explanation:

Jobisdone [24]3 years ago
8 0

the answer for 6 is - the immune system i just took that on my biology test

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Describe how the plasma membrane controls what goes into and comes out of a cell.
Vaselesa [24]
Diffusion has a major part in this. It has proteins embedded in it that allow molecules to diffuse in and out of the cell up and down its concentration gradient.
8 0
4 years ago
Distinguish between uric acid, urea and ammonia​
Semenov [28]

Answer:

Explanation:

Ammonia is associated with aquatic animals; urea is associated with most terrestrial and semiterrestrial vertebrates, but rarely land invertebrates (Campbell et al., 1972); and uric acid is the major product of terrestrial invertebrates, birds and reptiles (Prosser & Brown, 1961).

8 0
3 years ago
8. One of the lowest layers of Earth's atmosphere has undergone a large increase in temperature
Kamila [148]

Answer:

Troposphere is the lowest layer of Earth’s atmosphere that has undergone a large increase in temperature due to the  presence of greenhouse gases.

Explanation:

Troposphere (0 to 12 km) where we live is the lowest layer of earth's atmosphere, which is closest to the earth's surface contains half of the atmosphere. Here most clouds are found and almost all weather occurs. Atmosphere contains approximately 78% of nitrogen , 21% of oxygen and 0.9% of argon. Gases like carbon dioxide, nitrous oxides, methane, ozone and the water vapor constitutes the rest of the atmosphere. Many small particles called aerosols are also there which include dust, spores, pollen, volcanic ash, smoke etc.The greenhouse effect is a natural phenomenon that keeps the temperature on the earth suitable for supporting life. The greenhouse gases includes both natural and man-made gases like carbon dioxide , methane, nitrous oxide, chlorofluorocarbons, hydrochlorofluorocarbons, ozone, water vapour. They absorb radiation in the atmosphere and create the green house effect. The thermal infrared radiation emitted by the Earth’s surface and the atmosphere is absorbed by greenhouse gases. They trap heat within the surface-troposphere system preventing it from escaping back into space. This is called the greenhouse effect, which increases the temperature of the lower atmosphere.The increase in the atmospheric concentrations of greenhouse gases due to human activity has caused an increase in the natural greenhouse effect. As a result, the atmosphere is trapping too much heat which increases the temperature of the Earth.

7 0
4 years ago
Valerie was researching environmental effects with respect to reflected radiation. Which term would Valerie use when describing
IRISSAK [1]

The answer is albedo. This, in Latin, means whiteness meaning the measure of diffuse reflection of light of a surface. Albedo scale is 0 – 1 with 0 representing no reflection (black body) while 1 represents a total reflection of incident light. Albedo is used in astronomy and climatology.






3 0
3 years ago
Does anyone know the answer I need it please?!
stepan [7]

Order:

2 5 1 4 3

What the numbers mean:

From left to right the tiles are 1-5 just order them like second one first, fifth one second, first one third, fourth one fourth, third one last. Hope this helps!

(Ps I have them numbered because I had typed out the whole sentence but then I accidentally deleted it so I just numbered it)

6 0
3 years ago
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