16. Trachea is not a part of the circulatory system
18. Milk is pasteurized in order to decrease the number of microorganisms
19. The statement “Sexual reproduction leads to the possibility of variation in the next generation” is true
20. Infectious diseases are caused by microscopic organisms that can be transmitted from one organism to another
21. The number 23 represents chromosomes
Answer:
Coal, natural gas, and oil can not be filled up again quickly so they are fossil fuels and they are included in nonrenewable resources.
Explanation:
<span>Population crash is a sudden decrease in the number of people found in a given area as a result of shortage or the lack of environmental resources necessary for reproduction, survival and growth of the population. It is also known as a die back. The answer to your question is A. population crash.</span>
Answer:
I'm not so sure about this but I think it's the vacuole
I believe most books are considered secondary sources.