What characteristics of chloroplasts support the theory of endosymbiosis? Select all that apply.
They divide through binary fission.
They have circular DNA different from the cell's DNA.
They produce energy by breaking down food efficiently.
They have small ribosomes similar to the ones found in prokaryotes.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

the supermassive black hole is in the middle of the galaxy.

the answer is d.) homologous; have mammary glands

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