This is natural selection. The beak shapes help the birds find and eat certain foods that they can easily get where they live. The ones better adapted( or in this case has a better beak so say longer or stronger) will survive and reproduce more than the ones without the favored traits.
Diffusion is a process that occurs when a substance such as water, molecules, and ions, which are usually needed for various cellular processes, enter and leave cells. The way that cell diffusion happens is by molecules moving from an area of high concentration to an area of low concentration.
Of course increases. Because we know that CO2 is one of the reason for Green House effect and we know that this effect is responsible for heating up of earths surface. Hope it helps.
The statement that "birds build nests to keep the egg warms" describes a result.
The scientific method refers to an arrangement of steps succeeded by scientific investigators to answer particular questions regarding the natural world. It includes making observations, creating a hypothesis, and conducting scientific experiments.
The steps of the scientific method are observation, question, hypothesis, experiment, results, and conclusion. The result illustrates when one report what took place in the experiment. This comprises detailing of all the data and observations made at the time of the experiment.
Answer:
the correct answer would be A. Mass extinction involves many species over a short period of geologic time.
Explanation: