Help pls What type of energy is necessary for photosynthesis to occur?

Question 18 options:

heat

mechanical

electrical

sunlight

According to the cladogram, which organisms have roundworms as a common ancestor?

Which benefit of the community experience when its members have a hide level of health literacy

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.