A forest ecosystem can support a limited number of bears. This is because...
Question 3 options:

bears hibernate during the winter.

the base of the food chain is seasonal.

available energy is lost from one trophic level to the next.

light that supports photosynthesis is limited during certain times of the year.

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

20 the compound al(nh3)2 has atoms of nitrogen.

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos