Sharks' teeth and petrified wood are fossils in which organic compounds are replaced by other elements. this process is called

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination