The active ingredient in Ecstacy is
a. MDA.
b. MDMA.
c. MMA.
d. LSD.
e. STP.
B
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Simple fruits are derived from ________
a. separate ovaries of one flower b. none of the choices c. fused ovaries of separate flowers d. one ovary
Which of the following is the earliest step in blood filtration in the human body?
a. Water is collected in larger tubules and leaves the kidney in the ureter. b. Blood passes through the tubules in the glomerulus. c. Blood comes in contact with the nephrons. d. Water, required ions, and useful compounds are absorbed into the capillaries.
Four of the five answers listed below are characteristics of life. Select the exception
a. ionization b. energy usage c. reproduction d. growth e. cellular organization
What is the correct graphical representation of the organizational levels of a biological system