A local birdwatcher who has been watching a certain species of birds around his community for decades suddenly discovers one of the birds in the population has red-tipped feathers. This was different from the usual green and brown tipped feathers. Part A.
What is responsible for causing the sudden appearance of a new gene in the bird species?
a. a mutation
b. an environmental
c. artificial selection
d. a physical injury to the wings

What is turgor pressure, what causes it, and what does it do for a plant?

Ateam from new york presbyterian hospital is conducting a study about a recent increase in cases involving both excess sweating and kidney stones. what would the team need before it draws a conclusion about the cases? medications that are specifically designed to treat the sickness machines that are built to process blood and reduce symptoms until patients are healthy again data that profile the various patients who report these symptoms proof that the excess sweating is related to the excessive kidney stones

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?