Natural underground reservoirs consisting of layers of sand or porous rock that can hold water are called _______________________.

Fill in the blank(s) with the appropriate word(s).


aquifers

Biology & Microbiology

You might also like to view...

Unsaturated tails tend to __________ at the sites of

their double bonds. a. dissolve b. kink or bend c. separate d. react with ions e. do none of these

Biology & Microbiology

What are the advantages and disadvantages of both sexual and asexual reproduction? What will be an ideal response?

Biology & Microbiology

Suppose you are estimating the following model: Yi = ?0 + ?1Xi + Ui. You believe the variance of the unobserved factors (U) varies with X. If this is true, what is the consequence?

A. Your estimate of ?0 will be biased. B. Your estimate for ?0 and ?1 will be biased. C. Your estimate for ?1 will be biased. D. None of the above answers is correct

Biology & Microbiology

Which of the following is the cancer of epithelial cells?

A. carcinoma B. leukemia C. lymphoma D. myoloma E. sarcoma

Biology & Microbiology