Answer:

Explanation:
Diana's age is d.
Carol is 3 years younger than half of her sister Diana's age.
Carol's age =
Where d is Diana's age.

Hence, Carol's age is
.
Answer:
the study of civics is the study of the rights and obligation of citizens on society.
current events is the important events or social events that are happening in the world now.
political science is the study of how people get or compete for power and how it is used in governing a country.
The answer is B) organisms adapt to climatic changes
Answer:
B. seasonal temperature changes
Explanation:
A shallow lake can be dried up in the summer by extreme heat and can freeze over in the winter due to cold. Also I just took this test and this was the answer