The number of protons in a neutral atom equals the number of neutrons minus electrons electrons plus neutrons neutrons electrons

How many cells are our body made of ? ♡

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.