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Sindrei [870]
3 years ago
13

suggest two factors other than the rate of nitrogen fixation that may affect the avality of nitrogen in the marine ecosystem

Biology
1 answer:
quester [9]3 years ago
5 0

Answer: run off from land/rivers and phytoplankton blooms

Explanation:

Nitrogen, particularly as nitrate is easily leached from soil. Human agriculture relies on fertilisers with significant nitrate content that applied at levels higher than it can be used. The balance end up as runoff, much of which ends up in

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What percentage of species do scientists predict we will drive to extinction by the year 2100?
Dovator [93]

Answer: 50%

<span>Life on Earth appears to be on its way to extinction because of the carbon being pumped into our atmosphere.</span>

<span>Biologists reported that one in five species on Earth show signs of extinction, and unless urgent action is taken to save the planet’s biosphere, </span><span>scientists predict that  50% of species will be driven to </span>extinction by the year 2100.

<span>.</span>

7 0
3 years ago
Give the role of air in an ecosystem
Radda [10]

Sustain Life and Growth

Air consists one of the main life-sustaining gas called oxygen. Almost all living things breathe in and breathe out this air. Nitrogen and Carbon dioxide are also other gases that are vital for plants and their growth.

Combustion

Apart from this, air supports burning or combustion. The oxygen present in air help in burning of the fuels to basically carry out activities like cooking food, running industries and vehicles as well as generating heat and electricity.

Temperature Control

Another important aspect of air is that it helps in maintaining the temperature on the earth surface by circulating hot and cold air. Air acts as a conductor of heat as well. Even phenomena such as water cycle are dependent on air.

Supplier of Energy

Air which consists of energy is one of the main suppliers of energy. Living things are made up of cells and these cells extract oxygen within the blood to produce energy usually in the form of ATP. This biochemical generation of ATP is essential to maintain life on the earth.

Photosynthesis

Carbon dioxide, which is a component of air is used by plants during the process of photosynthesis. Here oxygen is also released by plants. And we already know how vital oxygen is.

3 0
2 years ago
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What is found in every living
Sedaia [141]

Answer:

A I think sorry if its wrong

8 0
3 years ago
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Endosymbiont theory explains some of the differences and similarities between prokaryotes and eukaryotes. Categorize the followi
spayn [35]

Answer:

Endosymbiont theory was proposed by Lynn Margulis in 1967 which suggested the origin of Chloroplast and mitochondria in eukaryotic cells.

The theory suggested that chloroplast and mitochondria organelle originated by engulfing the cyanobacteria and proteobacteria by other prokaryotic bacteria.

This shows that Prokaryotes exhibit the following characters:

1. These were the first organisms on Earth

2. Lack membrane-bounded

3. Aerobic bacteria are these types of cells

Eukaryotes exhibit:

1. Have mitochondria

2. Includes organisms that carry out aerobic respiration

3. Can be a multicellular organism

4. Includes organisms that are photosynthetic

5. Might have chloroplasts

6 0
3 years ago
If you go outside on a hot summer day with a double scoop ice cream cone, how will the cold ice cream interact with the hot
sesenic [268]
Heat from the air will move into the ice cream
8 0
3 years ago
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