2. How could the duck-billed dinosaur tooth fossil lead scientists to believe that plants also existed in Antarctica?

Where did our oceans come from

Surface proteins that identify cells as pathogens are called

Some antibiotics administered to humans inhibit peptide formation in microbes. how were the antibiotics made to target the microbes and not the eukaryotic host?

Which type of wave cannot move without a medium in which to travel?

Twenty cuttings were taken from one plant and planted in four containers of sand. two containers had a ph of 6.0, and two had a ph of 8.0. when the cuttings matured, all of those grown in a ph of 6.

Which portion (s) of a neuron is (are) likely to be associated with a sensory receptor or sensory organ?

What kind of inheritance occurs if red flowers crossed with white flowers produce offspring with red patches and white patches on their flower petals?

A circular opening cut into the skull to reveal brain tissue and decrease intracranial pressure is called a

Phytochrome plays a critical role in seed germination. which of the colors maximizes the seed germination?

If you were standing at the end of a pier with a stopwatch in hand, how would you measure the average wave period of the waves that pass by? •Why do successive (one after the other) waves that arrive at the beach have different heights?