How many classes of levers are there?

a. 2

b. 3

c. 1

d. 10

Which scientist discovered DNA after experimenting with white blood cells? Watson Franklin Miescher Wilkins

The largest organ of the canine body is the

For a human zygote to become an embryo, it must undergo what

Why does low air pressure usually indicate stormy weather? Low air pressure makes it harder for clouds to form. The air particles are packed together, making it easier for condensation to occur.

How do we use the ocean to breathe

Answer the following question in two or three sentences: How is selective breeding a kind of biotechnology? ...

Stress at a divergent plate boundary is called

What type of energy transfer is made possible by a nine-volt battery in a calculator?

What stimulates the secretion of erythropoietin

In which order do the necessary enzymes act to repair a thymine dimer by nucleotide excision repair? a) nuclease, dna polymerase, rna primaseb) helicase, dna polymerase, dna ligasec) dna ligase, nuclease, helicased) dna polymerase, rna polymerase,