Over the past 400 years, humans have documented the extinction of more than ________ species. This modern rate of species extinction is estimated to be ________ the normal extinction rate seen in the fossil record
A) 100; about the same as
B) 400; about double
C) 1,000; over 100 times greater than
D) 10,000; at least 1 million times greater than
Answer: C
You might also like to view...
How are the processes of artificial selection and natural selection similar and how are they different?
What will be an ideal response?
A mature ovule includes the embryo sporophyte, its reserves of food, and the seed coat. This is collectively called:
a. a fruit b. a seed c. a spore d. the endosperm e. an ovary
If you boil a cup of water with a tablespoon of dried shitake mushrooms and take a sip after it cools down, your taste receptors will identify the following flavor: ________
A) bitter B) salty C) umami D) sweet
Molecular genetic evidence that certain genes shared by both humans and fruit flies initiate eye development in both species suggest a common
A) complete genome. B) use of ATP in energy-transfer reactions. C) genetic toolkit for development. D) homunculi. E) duration of pregnancy.