Which of the following features of ancient horses are adaptations for living on open grasslands? Check all that apply.A) multiple toes that increased flexibilityB) complex patterns of ridges on molar and premolars that increased chewing abilityC) lengthening of limbs that increased running speed over long distancesD) decrease in body size that increased agility in confined spaces
What will be an ideal response?
B, C
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It is known that many trees lose their leaves in response to decreasing day length. As a result, you think that Gingko trees may also lose their leaves in response to decreasing day length. This statement is an example of:
A. a theory B. deductive reasoning C. an experiment D. a hypothesis
Several new materials have been developed for use in the microbiology lab. These materials must be sterilized before use, but cannot withstand a temperature over 60oC and can't be exposed to water. Which method of sterilization would be applicable?
A. Oven-dry heat B. UV radiation C. Steam autoclave D. Ionizing radiation
An advantage to sexual reproduction is
A) that there is no need to find a mate. B) the potential for high population growth. C) that offspring are adapted to the local environment. D) increased genetic variability.
If three molecules of a fatty acid having the formula C16H22O2 are each joined to a molecule of
glycerol (C3H8O3) with a dehydration synthesis reaction, the resulting neutral fat molecule would have the formula
a. C48H66O6. b. C48H72O8. c. C51H68O6. d. C51H72O8. e. C51H74O9.