PLS HELP ASAPBacteria, viruses, protists, parasites, and fungi can all cause disease and can be referred to as . antibodies

white blood cells

pathogens

macrophages

Blood, made up of red and white blood cells, work together to form

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

How long does it take a skateboarder going 6.0 m/s to come to a complete stop if she slows down at a rate of 2.0 m/s^2