Someone who loses the ability to make blood cells might need a transplant of the porous tissue known as ________ from a close relative
Fill in the blank(s) with correct word
red bone marrow
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Cattle egrets follow African ungulates such as African buffalo around and catch insects that the buffalo flush out. Oxpeckers perch on the backs of buffalo and feed on ectoparasites that infest the buffalo. Which one of the following shows the ecological interaction that the buffalo has with each bird?
A. cattle egret: mutualism; oxpecker: commensalism B. cattle egret: commensalism; oxpecker: mutualism C. cattle egret: competition; oxpecker: mutualism D. cattle egret: mutualism; oxpecker: mutualism E. cattle egret: commensalism; oxpecker: commensalism 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 symbiotic relationships and the qualifications for each? 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? Reflection 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?
Based on what you know about mammals, which of the following sentences would you predict best describes what happened in areas where marsupial and placental mammals came into contact?
a. All placental animals went extinct. b. All marsupial animals went extinct. c. The two groups mixed with minimal competition due to their niche differences. d. Most marsupial animals went extinct. e. Most placental animals went extinct.
Darwin's ideas on evolution were advanced for his time. His approach to science and natural selection were supported by what main tenant?
A. The world is fixed and constant. B. Operation of natural laws produces constant change and improvement. C. Species were unchangeable over the course of time. D. Various organisms and their structures resulted from a spontaneous action.
Based upon the chemical experiments you performed, how would you classify these life-forms?
A) fungi B) bacteria C) protists D) archaea