Calcium
Calcium helps build and maintain bones.
This is false. Organisms may play several important roles in an ecosystem. Consider for example and ocean shore environment occupied by a particular species of crab. The crabs are scavengers and eat any organic matter they encounter. They therefore play an important role in the cycling of nutrients in the ecosystem. The crabs are however also an important source of food for a range of other species occupying the same habitat, including octopi, certain fishes and sea otters. Therefore, the crabs are an important part of the food web in the ecosystem. Many species similarly occupy multiple important roles in an ecosystem.
Organic molecules, which are found mostly in food. These molecules have C-C or C-H bonds, which are high energy bonds.
Stressor due it comes from an external condition or event.
Answer:
Filled out punnett square is in the image
