What two things are involved in a nerve impulse?

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.