WILL MAKE BRAINLIEST Fill in the blank below with the word that best completes the sentence.
Natural selection leads to_
a process of change in a population over time.

Determine whether the characteristic describe dna replication in prokaryotes only, eukaryotes only, or both prokaryotes and eukaryotes drag each tile to the correct location on the chart

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems