Human activity has a great impact on waterways. Decreased amounts of vegetation leads to erosion of water banks. Increased fertilizer and nutrients levels in water from agriculture, sewage, and industry lead to the formation of algal blooms and subsequent decrease in other aquatic organisms.

6 0

3 years ago

Which of the following statements is true?

jok3333 [9.3K]

Answer:

D. Both A and C

Explanation:

I'm guessing D. states 'Both A and C', since it works.

Process:

A. sin 18° = 0.31, and cos 72° = 0.31

A. works!

B. sin 55° = 0.82, and cos 55° = 0.57

B. does not work!

C. sin 72° = 0.95, and cos 18° = 0.95

C. works!

Hope this helps!

7 0

3 years ago

Which is one way that water helps living things? temperature regulation oxygen transportation heat absorption nutrient productio

kondaur [170]

Amswer:

Option A.

Explanation:

<h3>Hope it works out !</h3>

Let me know if I'm wrong :))

8 0

3 years ago

Read 2 more answers

Non-Alaskan grizzly bears are indicator species for mountain ecosystems. In the nineteenth century, the grizzly bear nearly went

borishaifa [10]

Explanation:

Animal indicator list is a barometer to check how a particular ecosystem is affecting the lives of particular animals. The indicator measures stress or behavior in the ecosystem to know whether to protect the specie or allow them undisturbed

This is to avoid or reduce to barest minimum incidences of extinction of such specie in the ecosystem.

The grizzly sudden reduction in number from well over 100,000 in California to less than nothing in 1942 triggered the need to protect the grizzlies from human destruction and possible extinction. Grizzlies was a national specie and appeared in the flag of California. The population gradually reduced in most of the states of Idaho, Utah, Alaska and many more.

The grizzlies in 1975 were declared protected species to avoid being hunted or trapped by humans and to repopulate them in the areas where they once lived. Their future will depend largely on humans ability to allow them to coexist with them, by setting out a large area for them to live and regroup.

This will go to balance the ecosystem which has been tampered or disturbed by development.

4 0

3 years ago