Denser materials should be found near the center of the Earth based on how planets form. How then can we explain the presence of heavy rare earth metals found near sites of volcanic activity?​

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

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