Answer:
Explanation:
The main danger resulting from ocean contamination from runoff is the pervasive impact upon the food chain. ... Rivers are ecosystems that many communities rely upon for food and drinking water. Contamination makes it dangerous to eat fish that contain PCBs, heavy metals, mercury or other chemicals.
Answer:
Oa
Explanation:
bcz primary is a form of plants type so thats why its OA
Answer:
D. Fruit flies prefer mates adapted to the same food source.
Explanation:
Food and diet varies depending on the location of an animal, that being said, it is in the nature of an animal to mate with another in order to produce offspring who can survive on the same food source. Instinctively, a fly would see a mate who's diet differed and think that their offspring would not be able to survive due to the lack of that varying food source.
Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials.