<span>selective breeding </span>because people are breeding new things.
Members of a species can recognize mates using appearance, behavior, and smell
hope this helps if not just let me know
To camouflage and hide from prey but also to get the jump on prey
<span>What appears to be another given is a plot relating the rate of heatbeat and time. Distance is the integral of speed with respect to time. This corresponds to the area under a v-t graph. Taking the height of the triangle to be 0.75m/s and the base to be 0.32s which gives distance of beat equal to 7.5cm </span>
Atoms contain a nucleus and orbitals. Protons and neutrons are within the nucleus and electrons are in the orbitals. The number of protons represents the atomic number. The atomic mass is the sum of the protons and neutrons. When the number of neutrons differ, it is called an isotope, like C12, C13, C14. The number of neutrons affect the stability.