I have trouble unlocking the answers

According to the fossil record, when did the dinosaurs become extinct? A at the start of the Mesozoic Era B at the start of the Paleozoic Era C at the end of the Mesozoic Era D at the end of the Paleozoic Era

How many electrons are transferred in the iconic bond between sodium and chorine in NaCI

Which term describes a chemical reaction in which water is gained? A. Reduction B. Hydration C. Hydrolysis D. Dehydration

A) explain the hardy-weinberg principle of equilibrium theory. (4 pts.) b. apply the hardy-weinberg principle to this scenario. in plants, violet flower color (v) is dominant over white (v). if p=.8 and q = 0.

If a color-blind man marries a woman who is homozygous for normal vision, it is possible that one of their sons could be color-blind.

The movement of hot and cold air between land and sea creates what? a. Sea breeze b. Solar energy c. Trade winds d. Coriolis effect

How does the continental divide affect the climate

Fred went to the doctor because his body was not producing semen. Which part of Fred's body was most likely functioning incorrectly to cause this problem.

What do metabolism, respiration, and digestion have in common? They break larger molecules into smaller ones. They build larger molecules. They are each single chemical reactions. They each involve multiple chemical reactions.

The possibility of down syndrome and other chromosomal disorders increases as the mother's age increases because