What is the main function of the structure labeled A?

It attracts insects and other animals.
It moves the pollen to the ovaries.
It catches pollen.
It produces pollen.

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

When are the centromeres broken in meiosis?