Explain why microorganisms such as bacteria are critical components of the nitrogen cycle. They deliver useable forms of nitroge
n directly to animals. They destroy other microorganisms that would otherwise use up the nitrogen in the soil. They convert non-usable forms of nitrogen to usable forms. They filter nitrogen from the water that is used to nourish plants.
They convert non-usable forms of nitrogen to usable forms.
Explanation:
Organisms such as plants cannot use the atmospheric nitrogen form N2 which is abundant. So bacterias are key players because there are special nitrogen fixing bacteria that convert N2 to usable forms of nitrogen such as ammonia (NH3).
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Gases in the atmosphere, such as carbon dioxide, trap heat similar to the glass roof of a greenhouse. These heat-trapping gases are called greenhouse gases
