What is false about decapods?
a. first walking legs are usually modified.
b. eyes are compound.
c. they have only one pair of antennae.
d. mandibles are used to crush food.
e. sexes are usually separate.
C
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A procedure that is often used to separate molecules by using their molecular charges is called ________
Fill in the blank(s) with correct word
Like all theories, the cell theory is never accepted by scientists as an "absolute truth." Which statement best explains why?
A) A theory evolves from collecting information, forming hypotheses, and then verifying the predictions of the hypotheses. B) A theory is only a collection of hypotheses that have been verified by experimentation. C) A scientific theory is not based on experimental evidence or observations. D) Future evidence may cause a theory to be modified or even rejected
Where is primary growth occurring in an old tree?
A) Nowhere; trees more than a year old have only secondary growth. B) closest to ground level at the base of the tree C) in young branches where leaves are forming D) where the vascular cambium and cork cambium are located
A hominid thought to have displayed facultative bipedalism
A) founder effect B) Homo Habilis C) Latin binomial D) Australopithecus Africanus E) convergent evolution F) Ardipithecus ramidus G) Neanderthals H) chimpanzees I) Homo erectus J) astragalus