Group of same species live in an area is
a. community
b. ecosystem
c. population
Ans: c. population
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What are the criteria Conservation International has established to determine if an area is a conservation hotspot?
A) They contain at least 1500 endemic vascular plant species and they have more than at least 50 percent of their traditional or primary vegetation. B) They contain at least 500 endemic vascular plant species and they have lost at least 20 percent of their traditional or primary vegetation. C) They contain at least 500 endemic vascular plant species and they have more than at least 50 percent of their traditional or primary vegetation. D) They contain at least 1500 endemic vascular plant species and they have lost at least 70 percent of their traditional or primary vegetation. E) They contain at least 1500 endemic vascular plant species and they have more than at least 70 percent of their traditional or primary vegetation.
Which hormone(s) directly prepare(s) and
maintain(s) the uterine lining for pregnancy? a. estrogen b. progesterone c. follicle-stimulating hormone d. luteinizing hormone e. both estrogen and progesterone
Which of the following has the greatest amount of kinetic energy?
A) The cool air surrounding the car engine B) A moving car C) A tank of gasoline D) A hot car engine E) An unlit firecracker
As you are walking along a beach, you find an animal and believe that it belongs to the class Asteroidea. Which of the following characteristics would support your hypothesis that the animal is a sea star and not another type of echinoderm?
A) It is pentaradially symmetric. B) It feeds on other animals. C) It has a hydrostatic skeleton, formed from its water vascular system. D) Its central region is not well-delineated from its appendages.