Answer:
Of those farms, 686 harvested 100 acres (0.40 km 2) or more, which accounted for over 196,000 of the total acres of trees harvested. That same year, there were only three U.S. Christmas tree farms with more than 10,000 acres (40 km 2) of cropland in production.
Explanation:
Each year, forests in North America grow significantly more wood than is harvested. In the U.S., average net annual increase in growing-stock trees on timberland is about 25 billion cubic feet.
54289 = 233^2
You know the last digit of the squared number is 3 or 7, so just try numbers ending with those from 220 to 250
Answer:
In nearsightedness (myopia), the light rays form an image in front of the retina. In farsightedness (hypermetropia), the rays focus behind the retina.
Answer:
According to the nebular theory, the planets formed from a process called <u>accretion</u>.
Explanation:
The nebular theory is a theory that explains the formation of solar systems. After the formation and growth of the proto-star, the gases and dust in the nebula form a disk and spiral quickly around its center under the influence of its gravitation. This long and destructive process ends with the formation of planets, characteristics of which depend on their distance from the star. The term from astrophysics referring to this way of planet formation is <em>accretion</em>. Planets are not only astronomical objects created by accretion processes but galaxies and stars as well.
