Answer:
The Earth is tilted toward Polaris, but its hemispheres lean toward or away from the Sun. Earth's tilt remains constant over the course of a year. Earth's movement around the Sun carries each hemisphere, in turn, to a different orientation relative to the Sun.
Explanation:
A area of land that is below sea level
Answer:
10 times bigger.
Explanation:
On the so-called Richter scale, a magnitude 8 on a seismograph was 10 times bigger than a magnitude 7.
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.
