<h2>Fixation</h2>
Nitrogen in its gaseous form (N2) can’t be used by most living things. It has to be converted or ‘fixed’ to a more usable form through a process called fixation. There are three ways nitrogen can be fixed to be useful for living things:
<h3>Biologically: </h3>
Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants. Legumes (such as clover and lupins) are often grown by farmers because they have nodules on their roots that contain nitrogen-fixing bacteria.
<h3>Through lightning: </h3>
Lightning converts atmospheric nitrogen into ammonia and nitrate (NO3) that enter soil with rainfall.
Answer:
Cyanobacteria are responsible for first adding oxygen to the Earth's atmosphere.
Answer:
Twins occur.
Explanation:
If the embryo is divided into half by artificial methods such as microsurgical, twins occur in the female body. Both the embryo are identical to each other. twins means that there will be two babies formed at the same time in the body of female. After the separation of embryo, both the embryos are genetically identical to each other and it continue to develop into a new organisms.
Answer:
Evidence: During photosynthesis, plant cells use sunlight to synthesize food. This is followed by cellular respiration, which converts the products of photosynthesis into chemical energy. Though animal cells do not use photosynthesis, they still perform cellular respiration in virtually the same way. Plant cells are the producers of glucose, and animal cells are the producers of oxygen, these are both reactants in the process of cellular respiration. The products of cellular respiration include carbon dioxide and water. The plant cells are consumers of animal cells waste products.
Explanation:
Claim: Both plants and animals perform cellular respiration
