Required to start a chemical reaction.

a. chemical equilibrium
b. the law mass of action
c. activation energy
d. metabolism

a higher concentration molecules causes causes a faster chemical reaction. this is known

a. the law of mass action
b. chemical equilibrium
c. activation energy
d. metabolism

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.