Every seven years a certain population of trees experience a year of extremely slowed growth. these periods of slow growth are most likely due to

cyclical climate change.
sedimentation in watersheds.
population cycles.
species extinction.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

What happens whenever a net force acts on an object

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel