If the removal of a species causes an ecosystem to collapse that species is know
ID: 180103 • Letter: I
Question
If the removal of a species causes an ecosystem to collapse that species is known as an (a) a. keystone species b. endangered species c. threatened species d. ghost buster Darwin's evidence that evolution occurs included: a. existence of fossils b. a distinctive distribution of plants and animals c. unique but similar species on nearby islands d. all of the above Hardy-Weinberg equilibrium is based on a number of assumptions. Which one is not one of these? a. the size of the population is definitely small b. no mutations c. alleles are replaced equally from generation to generation d. individuals mate at random e. no immigration or emigration Which of the following is not a gas that contributes to the greenhouse effect? a. Ammonia b. Carbon dioxide c. Methane d. CFC's ___The differences that are produced between breeds by artificial selection are more distinctive than differences produced between wild species. ___New gene variations are constantly being iExplanation / Answer
67. Answer - Option A - Keystone species. - Removal of the species will cause the entire system to collapse
68. Answer - Option D - All the above, Because existance of fossils, distinctive distribution of plants and animals, unique but similar species on nearby islands are the evidences for evolution.
69. Answer - Option C - The assumption of Hardy wein berg equilibrium does not include that alleles are equally replaced from generation to generation.
70. Answer - Option A - Ammonia, It does not contribute to green house gases.
71. True - The differences that are produced between breeds by artificial selection are more distinct than differences produced between wild species.
72. True - New gene variations are constantly being introduced into population through random mutation.