Which relationship between two species listed would be mutually beneficial a) a fish and a leech b) a dog and a tick c) a flower plant and a bee or d) a tree and a caterpillar ?

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla

Evolution acts upon the population of organisms and not on each individual organism

Identify the area on the image where the force of attraction is the strongest.