Which of the following is a characteristic of flowering plants?
A. They produce seeds.
B. They are called angiosperms.
C. They develop flowers.
D. They have leaves, roots, and stems.
E. All of the choices are true.
E. All of the choices are true.
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A microbial environment containing high nutrient concentrations is called an oligotrophic environment.
Answer the following statement true (T) or false (F)
Which animal makes human interleukin-2, a protein that triggers immune cells to divide and is being used as a cancer
drug?
a. cowsb. sheep c. mice d. goats e. rabbits
The sequence of changes in the species that make up a community is called ________
A) ecological succession B) pioneer progression C) climax community D) progressive adaptation
What hydroelectric alternative generates electricity without greatly disrupting the river's flow?
A. Hydroelectric dam B. Photovoltaic cell C. Reservoir hydropower D. Run-of-river technique E. Wind generation