Which is an example of a clumped distribution of a population?
A. Antelope travel in herds.
B. Multiple species join each other at the waterhole to drink.
C. Two male hummingbirds have a confrontation on the border between their territories.
D. A tree species releases a poison to defend the soil around its roots, resulting in trees spaced evenly like a grid.
Answer: A
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Who is at most risk to develop legionnaires' disease?
a. 65-year-old transplant recipient b. 14 year old swimming in a lake c. 90 year old living in an apartment complex d. Newborn baby to a mother infected with hepatitis
The idea that many species that once lived are now extinct due to major geologic events is called ________ and was developed by ________
a. catastrophism / Georges Cuvier b. inheritance of acquired traits / Jean-Baptiste Lamark c. principles of geology / Charles Lyell d. evolution / Charles Darwin
The type of chemical bond that connects the sugars and phosphates together in a DNA molecule is a
_______________ bond. Fill in the blank(s) with the appropriate word(s).
The (atoms/isotopes/stereoisomers) of an element vary in the number of neutrons in the nucleus.
Fill in the blank(s) with the appropriate word(s).