The rate of extinction picks up dramatically during a(n) __________, when a large proportion of Earth's organisms become extinct in a relatively short period of geologic time.
Fill in the blank(s) with the appropriate word(s).
mass extinction
You might also like to view...
Define metabolism
What will be an ideal response?
The results of the treatment of 20 boys with SCID-X1 showed that ____
a. SCID-X1 can be cured through genetic engineering b. none of those treated were cured of the disease c. a bone marrow transplant can cure SCID-X1 d. our understanding of the human genome exceeds our ability to modify it e. the “treatment” caused numerous unforeseen complications.
Unlike white blood cells, mature red blood cells lack a(n) ________
Fill in the blank(s) with correct word
One of the risks of low crop diversity is that there is a greater risk of famine should the crop exposed to disease. An example is the failure of the ___ crop in Ireland for several years in the mid-1800's.
a) corn b) potato c) rice d) wheat