A sequence of organisms, each of which serves as a source of nutrients or energy for the next, is called a(n)
a. food web
b. food chain
c. Ecosystem
d. Community
e. food chain and food web (they are interchangeable)
B
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A cart travels 5 m in 1 s, then 5 m again in 2 s, then another 5 m in the third second. The acceleration of the cart is
A. 10 m/s2. B. 0 m/s2. C. more than 10 m/s2. D. 5 m/s2.
Marriage dowries in India reflect
A) that some families value male children more. B) a legally enforced tradition. C) a popular fad. D) the value of women as mothers and wives. E) that most families value female children more.
On which planet have we observed and recorded very strong winds, large dust storms, and sand dunes?
A. Neptune B. Jupiter C. Mercury D. Venus E. Mars
How many high-energy phosphate bonds are cleaved during activation of fatty acid b-oxidation?
A) 0 B) 1 C) 2 D) 3