The coral reef has specific temperatures and sunlight each day, as well as many types of corals and fish that live there. What level of organization is the coral reef? A. Organism
B. Population
C. Community
D. Ecosystem

Organisms

Explanation:  Shelter, find food, reproduce, and rear their young in provide jobs for local communities, and offer opportunities for recreation. These ecosystems are culturally important to indigenous people

d. groundwater flows through the subsoil and deposits minerals.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: