Answer:
Nitrogen fixation
Explanation:
Certain soil bacteria, e.g., <em>Azobacter spp</em> can combine free nitrogen of the atmosphere with oxygen to form nitrates. This is called <u>nitrogen fixation</u>. Other nitrogen-fixing bacteria such as Rhizobium form symbiotic unions with the roots of leguminous plants called root nodules. They fix nitrogen to form nitrates which are used up by the host plant. Nitrifying soil bacteria, e.g., <em>Nitrobacter </em>convert nitrites to nitrates in a process called <u>nitrification</u>.
Answer:
To study objects that are way too small
B - Enzymes act as catalysts because they lower the activation energy
<em><u /></em>
<em><u>i think this could help :) </u></em>
<em><u /></em>
<em><u /></em>
<em><u>Count the number of cells in each phase of mitosis. Add the data to the table on page 4. Calculate the percentage of cells in in each phase of mitosis. Step 2: Calculate the time an onion root tip cell spends in part of the cell cycle. </u></em>
