Choose the best terms to complete these sentences.

All seed plants reproduce using
, which are tiny grains that develop into sperm cells.

When a sperm cell fertilizes an egg, a(n)
develops, which contains an embryo, stored food, and a protective coat.

Which of the following is a common danger of commercial fishing?

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease