How many strands make up a dna double helix?

What two organ system do gills belong to

What are the two types of nucleotides

On the Galápagos Islands, the finches that Darwin studied tended to have either small beaks or large beaks. The smaller beaks are best at eating soft seeds but are ineffective at cracking large seeds. The larger beaks are best at cracking hard seeds.

What are the two main steps of DNA replication

Which is an advantage of sexual reproduction over asexual reproduction?

On a transverse wave the trough is A. the highest part of the wave. B. the lowest part of the wave. C. the resting position of the wave.

I give you a tube with water, dopa, ppo, but no buffer. will there be color change?

Explain what could happen to the community if all the frogs suddenly died. Which organisms will die? Which organisms will over populate? Why?

13. Which one of the following diseases is caused by a virus? A. Tuberculosis B. Tetanus C. Hepatitis B D. Strep throat

The part of the peripheral nervous system that controls the glands and the muscles of the internal organs is called the