What indicates that an area in the Northern Hemisphere is experiencing summer? A. The Sun is at its lowest point in the sky.
B. The Sun is directly over Earth's north end.
C. The Northern Hemisphere receives fewer direct rays from the Sun.
D. The northern end of Earth's axis is tilted away from the Sun.

How does the nervous system affect the excretory system?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Dna replication or repair occurs in a cell in all of thw following situations except when