A: One giant kelp individual
B: A kelp forest plus all of the physical factors affecting it
C: All physical factors affecting a kelp forest
D: A kelp forest plus all organisms living in it
举一反三
- Listen to the statement and circle the appropriate letter. What is the topic of this statement A: sea urchins B: sea otters C: the relationship of many sea living creatures in the kelp forest
- All of the following are mentioned in the passage as factors affecting the health of the population EXCEPT ________.
- What is the keystone species for the Pacific northwest? A: kelp B: sea urchin C: fish D: sea otter
- Which of the following foods cannot remove heavy metals from food? A: Egg B: Kelp C: Carrot D: Vegetable oil
- Which of the following factors is the material prerequisite for physical and mental development? A: Education B: Individual practice activities C: The environment D: Genetic factors E: Individual epigenetic factors
内容
- 0
_____ factors should be considered.( ) A: Such all B: Some these C: All such D: These all
- 1
Before entering a war, one must consider all factors of both sides.
- 2
*云帮助沙漠附近雨林中的植物生长 A: L. Tree leaves are green all the time in the monsoon forest. B: There is a dry season in the cloud forest on tropical mountains. C: Clouds help the plants in the rain forest near the deserts to grow. D: The formation of climate in the rain forest has little to do with the trees.
- 3
()is the essential one of all the three appeals. A: emotional B: ethical C: logical D: physical
- 4
Old growth forests can be described by all of the following EXCEPT A: have not been disturbed for several hundred years. B: large numbers of snags and fallen logs. C: provide a variety of ecological niches. D: a clear forest floor. E: are the prodominant forest form in the tropics.