During the ______, the sun's direct rays fall on equator, and the length of day and night is equal everywhere.
A. June equinox
B. September solstice
C. June solstice
D. March and September equinox
E. June and December solstice
Answer: D
You might also like to view...
The pairing of chromosomes along their lengths, which is essential for crossing over, is referred to as
A. syngamy. B. synapsis. C. prophase. D. recombination. E. centromere.
The Ames test
A. is used to measure levels of oxygen free radicals. B. is used to measure the repair of thymine dimers. C. can be used to measure the mutagenicity of chemicals. D. None of the choices are correct.
Morphology refers to the ____ of an organism
a. reproductive ability b. appearance c. differentiation d. lifespan e. movement
If you lock your knees while standing, you may pass out because of the lack of venous return to the heart.
Answer the following statement true (T) or false (F)