When does a species become classified as endangered?
a. when less than 100 remain
b. when less than 500 remain
c. when less than 1000 remain
d. There are no definitive guidelines for classifying a species as endangered
D
You might also like to view...
The earliest stromatolites were probably formed by
A) anoxygenic phototrophs. B) anoxygenic lithotrophs. C) oxygenic phototrophs. D) oxygenic lithotrophs.
Answer the following statements true (T) or false (F)
1. There are no parasitic crustaceans. 2. Each arm of the starfish differs internally, one being specialized for reproduction, another for respiration, a third for digestion, a fourth for the water vascular system, and the fifth for the nervous and circulatory systems. 3. Autotomy is the ability of an animal to lose a body part and subsequently regenerate it. 4. Echinoderms have an exoskeleton.
Cooksonia is a genus of very early tracheophyte plants. Unlike modern tracheophytes they only grew to a few centimeters in height. What feature provides the best explanation for their diminutive size?
A. They completely lacked vascular tissues. B. They did not have stomata. C. They consisted of only photosynthetic stems, not roots or leaves. D. Cooksonia species were not autotrophic. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about Cooksonia? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The (maximum/optimum/selective) growth temperature is the temperature at which an organism exhibits the highest growth rate
What will be an ideal response?