Air pollution is caused by A. natural events and human activities. B. human activities but not natural events. C. heavy rainfall. D. the sun.

What are 3 things that makes earths atmosphere a good home?

A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are produced? Are the daughter cells identical to one another or different from one another?

Epiphytic orchids grow harmlessly on their host trees, and derive their resources from the air and from rain, rather than from their host plant.

What happens to a population and to competition when there is a reduction of living space?

How does fossils depend on paleontology

What mineral is used as a coating for steel?

How do earthquakes at divergent plate boundaries differ from those at convergent plate boundaries? Earthquakes at divergent boundaries are deeper and more severe. Earthquakes at divergent boundaries are almost always larger.

Salvador would like to take a paternity test to determine if he is Pilar's father. He asks Pilar's mother, Antonia, to provide DNA samples for both her and Pilar. Which technique will most likely be used to compare the three DNA samples?

What is not a a form of passive transport

12. When a plant grows on the shade