Apopulation of hummingbirds feeds exclusively on nectar from orchids. two species of orchids exist in the hummingbirds' habitat. one orchid species has long tubes to store nectar while the other has short tubes to store nectar. the hummingbirds have a range of beak lengths, and the beak length determines which nectar tube an individual can feed from. this population of hummingbirds is splitting into two phenotypic groups. what scenario best explains why the population is diverging?

Contrast how pollination is different among gymnosperms and angiosperms.

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

What drives the atp synthase reactions that produce atp