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.
How many high-energy phosphate bonds are cleaved during activation of fatty acid b-oxidation?
A) 0 B) 1 C) 2 D) 3
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