Question 342 pts Which of the following is/are true about the greenhouse effect?

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Question 342 pts

Which of the following is/are true about the greenhouse effect?

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Question 352 pts

In response to global climate change, it is likely that some plant species will survive while others will go extinct. All of the following are explanations of this pattern EXCEPT:

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Question 362 pts

Under which of the below conditions will natural selection be least likely to result in adaptation?

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Question 372 pts

As we have discussed in the course, the gray wolf population on Isle Royale National Park is becoming locally extinct. One of the events that led to population decline was an outbreak of canine distemper virus on the island. Which of the below factors is most likely directly responsible for the high proportion of the population that died from this outbreak?

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Question 382 pts

The following population is comprised of 1,000 individuals. 400 individuals are juveniles (not yet reproducing), 500 are of reproductive age, while 100 are too old to reproduce. The sex ratio is 50:50 males to females. What is the effective population size?

Will rate when all are answered.

Greenhouse gases redirect infrared radiation back to the earth DQuestion 34 2pts Question 35 Question 36 2 pt Question 37 Question 34 2 pt

Explanation / Answer

The answer 342 pts-Greenhouse gases redirect infrared radiation back to the earth.(A greenhouse gas is a gas in an atmosphere that absorbs and emits radiant energy within the thermal infrared range) The answer 352 pts-CO2 is toxic,so increasing level of these gases will directly cause some plants to go extinct(When biologists have grown plants inside green house with extra CO2 present,the plants have grown more rapidly and more abundant) The answer 362 pts-Low genetic diversity (Witout genetic variation ,a population cannot evolve in response to changing environment variablesand as result,may face an increased risk of extinction) The answer 372pts-A Decline in the moose population that made food difficult to find. The answer to 382 pts is 500 (The effective population is the number of individuals in a population who contribute offspring to the next generation or all the breeding adults in that population).

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