gull, large fish, medium fish, small fish, krill, plankton How many trophic levels are in the aquatic food chain pictured? (Fill in the blank with the correct number.)

climate change and pollution

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:

c is the answer to this question. altitude affects the weather because air molecules evaporate.

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!