Answer: Option B) The length of time over which the conditions are measured
Explanation:
Weather is the atmospheric condition of a given area over a short period of time, usually days to several months
Climate, on the other hand, is the atmospheric condition of a given area over a long period of time, usually over 2 years.
Thus, weather and climate differ based on the length of time over which the conditions are measured.
Answer: When a blood vessel contracts for a short period of time.This constriction can contract small vessels completely and avoid the flow of blood through them.
Explanation:
The Earth Is billions of years old and Earth is much more different now than it was then.
Organic chemicals can enter the grond water and contaminate private wells through waste disposal etc.