Answer:
IT SAYS DEAD RATS WHICH MAKES YOU THINK THEY ARE DEAD BECAUSE OF A MISTAKE. which is a conclusion
Explanation:
Answer:
It helps prevent invasive species from coming in.
Explanation:
Invasive species ruin habitats because they have no natural predators, so they grow and mooch off of native species which kills them off.
Genetic drift occurs when there is no random mating across a population. This causes a change in allelic frequency due to a random sampling of the population.
As the aboriginal population explored the earth, a small part of the population became geographically isolated either due to continental drift and climate changes. As the isolated population grew bigger, they established their own gene pool. This resulted a change in genotypic frequencies from that of the aboriginal population.
We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
