Organisms are constantly interacting with their environment. Sometimes this interaction has a positive effect on the environment, other times a negative impact. Beetles in the forest infest and eat limbs of trees that have fallen to the forest floor.

The best way to describe the beetles impact is to say that

The answer is B.

Explanation:

I guessed and got it right

The correct answer is option B) i.e. they are having a positive impact on the environment by acting as decomposers.

Explanation:  By acting as decomposers beetles are helping in recycling of nutrients between biotic (organisms) and abiotic factors (enviroment). So, it may be considered as positive impact on the environment. Decomposers play a very important role in food chains and food webs. They breakdown biomolecules and liberate the micronutrients and micronutrients as inorganic molecules back to the environment. These inorganic molecules are used by plants once again  to synthesize biomolecules. This is how nutrient cycle operates with the help of decomposers. For example, protein molecules of dead and decaying matter are broken down by decomposers to liberate nitrogen gas to the environment which is utilized by leguminous plants to make protein molecules again.

Bears are extraordinarily intelligent animals. ...

Bears grieve deeply for others. ...

Bears have excellent senses of smell, sight and hearing. ...

Some species of Asiatic bear build nests in the trees. ...

Bears care deeply about family members.

Explanation: Grizzly bears possess a bite force of over 1200 PSI, which is enough to crush a bowling ball, or an iron skillet.