Answer:
Genetic variation.
Explanation:
It is caused by genes inherited from parents to offspring. It is a result of genetic information from parents.
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Answer:
According to one estimate, stands of century-old forest now account for only 7% of forest cover in the United States (USDA-FS 2000). Since 1600, 90% of the virgin forests that once covered much of the lower 48 states have been cleared away.
Explanation:
Mount Baker-Snoqualmie National Forest, Washington
The Mount Baker-Snoqualmie forest is located in the Cascade mountain range in Washington state and is home to 644,000 acres of old-growth. Situated around an hour away from the Seattle metropolitan area, this forest is one of the most frequently visited in the country.
Answer: A. Increasingly crowded urban areas
Explanation: Think about it this way. If you heard about more products being made in a city that means what? More jobs! Many people moved to cities and then made the cities unsanitary and many diseases spread around such as hepatitis. Anyways the more jobs there was the more money people could make and the more people lived in big cities like New York.
Answer:
The sea affects the climate of a place. Coastal areas are cooler and wetter than inland areas. ... In the summer, temperatures can be very hot and dry as moisture from the sea evaporates before it reaches the centre of the land mass
Answer:
b. Tall oak trees
Explanation:
In order for the owner to be able to have energy benefit for the home in a place with hot summers and cold winters, the most practical thing would be to have tall oak trees in front of the large glass windows on the southern side. The reason for this is that the oak trees will be beneficial in both seasons. During the hot summers, the oak trees will provide a lot of shade, thus lowering the temperature on the southern side where the large glass windows are. During the winter, the oak trees will have no leafs on them, meaning that the southern side will be able to get the needed sunlight in this period. We come to a situation where the oak trees will reduce the energy spending for cooling down in the summer, and it will reduce the energy spending for warming up in the winter.
