Why do we not have many fossil records from the precambrian era?

Rocks formed from molten material

How does ocean acidification work?

What two characteristics of the males most influence their likeliness to mate

It is NOT required in a chemical reaction. a. atomic nuclei c. products b. reactants d. energy

Many viruses are a protein coat surrounding a segment of DNA. Because viruses are not made of cells they are ... A. not considered to be living things. B. able to reproduce very quickly. C. better able to communicate with other viruses.

What was the first generation of offspring in mendel's experiment calle?

What are the negative effects of having stem cells?

What are three factors tht make a rock susceptible to weathering

Why does dna use thymine instead of uracil?

How did the Gulf of Mexico's dead zone form? A. Hurricanes destroyed the coastline B. An oil spill killed all the species there C. Fertilizer runoff from farming caused populations of algae to grow exponentially D.