Question 12 (1 point)
Where do animals obtain the nitrogen they need?
plants they cat
bacteria living within them

Which of the following terms describe a liquid molecule that has only single bonds between its carbon atoms

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell