What commonally do all flowering plants share with all nonflowering plants? 1.) the necessary structures for sexual reproduction
2.) the production of spores
3.)the necessary structures for asexual reproduction
4.) the production of pollen

The necessary structure for asexual reproduction

Explanation:

it would be the percentage of food eaten by the flock

i remember doing this lab

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.