Answer:
animal wastes and fertilizers
Explanation:
The majority of the nitrates that are polluting the rivers come from the animal wastes and from the fertilizers used in the agriculture. The increased amounts of nitrates in the rivers causes eutrophication. This basically means that the water is becoming over-saturated with nutrients. This leads to the spreading out of the algae. As the algae spread out more and more, they cover the surface part of the water, so large portions of the rivers do not receive sunlight, which kills of the organisms that use photosynthesis. Further, the algae reduce the amount of oxygen in the water, often resulting in dying out of the fishes. It is a chain reaction that leads from one thing to another and the end result is devastating.
to create maps this was the job of a cartographer
Answer:
C
<u>when two tectonic plates meet. One of the plates is pushed under the other into the Earth's mantle.</u>
Answer:
All three statements are sometimes true and sometimes false
Explanation:
The Moon orbits the Earth, with the same face always toward the Earth.
1. The moon is sometimes between the Sun and the Earth. At other times, it isn't.
2. The Sun shines on the back side of the Moon, but it also shines on the front side.
3. The side that faces the Earth is sometimes dark (New moon) and sometimes lit (Full moon).
Answer:
A, everything is about money these days.
Explanation:
