True or False: Individuals in a group often exchange favors. This reciprocal interaction provides one explanation for the evolution of altruism
A. true
B. false
A
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The 2007 review on climate change concluded that the warming in recent decades is attributed to ________
a. human induced increases in greenhouse gases b. increased geothermal activity c. increased water vapor in the atmosphere d. volcanic eruptions e. solar output
Which of these hormones stimulates the production of milk?
A) Oxytocin B) Prolactin C) Estrogen D) Progesterone E) Colostrum
Upon which of the following is passive immunity dependent?
A) a person's own immune system producing antibodies B) antibodies made by another organism C) antibody-producing cells from another organism D) antigens from a person's own body
Any gene, when mutated, that leads to an organism with structures in abnormal or unusual places, is referred to as a(n) ________________ gene.
A. Heterotic B. Vestigial C. Homeotic D. Mutagenic E. Embryotic