What must be true of an environment in order for natural selection to occur? (1 point) 1) The environment must be land-based, not aquatic (water-based).
2) The environment must have many places for organisms to raise their young.
3) The environment can only have a small amount of species present.
4) The environment must have a limited amount of resources available.

the answer will be a) proteins i believe

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

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!