G Which are structures of the excretory system? Select four options.
kidney
spleen
O bladder
esophagus
O ureter
O urethra

The answer are A c e f

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

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.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen