The thermocline is broken down by temperature changes that allow upwelling to occur.
Answer the following statement true (T) or false (F)
True
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The process by which genetic material is exchanged between different species, such as an endosymbiont and its host, is:
A. vertical gene transfer B. horizontal gene transfer C. binary fission D. mutualism E. parasitism
The two most important regulatory systems for the maintenance of homeostasis are ____
a. circulatory and nervous systems b. endocrine and circulatory systems c. lymphatic and circulatory systems d. nervous and endocrine systems e. lymphatic and circulatory systems
Which of the following is least likely to be preserved as a fossil?
A. an organ like an eye or lung B. a bone or shell C. an organism that died on land D. a complete large organism E. a leaf or stem
Select the best choice for statements 135–138 in reference to the
four hominids listed below. a. Homo habilis b. Homo erectus c. Homo sapiens d. Homo neandertalensis M 135. The Neandertals belong to this species. M 136. Our own species evolved from this species. M 137. This species was the first known to use fire. D 138. This species was the first Homo species definitely known to use tools.