Answer:
I'm pretty sure the bottom one is faciliated diffusion. Try searching up your answer so sorry I couldn't help more, but I hope that does help you out a bit:)
Answer:
Explanation:
all living organisms are built of carbon compounds. Nitrogen fixation: special bacteria convert the nitrogen gas into ammonia that plants then use. ... nitrogen is the required nutrient for living things to produce organic molecules. it's the building block of DNA, RNA, proteins, and nucleic acids.
please post the understandable question
