In a flower, the sticky structure that helps to trap pollen is known as the
A) stamen.
B) anther.
C) ovary.
D) stigma.
D
Environmental & Atmospheric Sciences
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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.
Environmental & Atmospheric Sciences
Drugs such as Vioxx and Celebrex do which of the following?
A) cause formation of lipids which increase the risk of heart attacks B) inhibit COX-2 activity C) both a and b D) neither a nor b
Environmental & Atmospheric Sciences
Carbonate rocks contain the ________ ion as part of their chemical composition.
A. CO32- B. CaCO32- C. CaO32- D. limestone E. Carbonate rocks do not contain ions.
Environmental & Atmospheric Sciences
The main dune form in most deserts is called a(n) ________
A) barchan B) bajada C) self D) transverse E) alluvial
Environmental & Atmospheric Sciences