Most fetuses can survive outside the womb after a minimum of ________ weeks
A) 32 B) 45 C) 15 D) 38 E) 20
A
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Based on Figure 24.10, which of the following statements are true?
A. Neanderthals are more closely related to the French than to other groups. B. Neanderthals are more closely related to the Chinese than to other groups. C. Neanderthals are more closely related to the Melanesians than to other groups. D. Neanderthals are more closely related to the Nigerians than to other groups. E. Neanderthals are equally related to all non -African groups.
The compost pile temperature at which pathogens, but not thermophiles, are killed is about
A. 20-30ºC. B. 55-66ºC. C. 62-75ºC. D. 90-100ºC.
The theory of endosymbiosis is based on
A. evidence from the fossil record. B. the experiments in which bacteria were made to grow in plant cells forming chloroplasts. C. the knowledge that ribosomes are structures found in bacteria, plants, and animals. D. similarities between chloroplasts and other organelles in animals. E. the observations that chloroplasts and mitochondria resemble bacteria.
Plants and algae need phosphates for growth. Many fish and other animals feed on aquatic plants and algae. Why, then, is an excess of phosphates in the water (eutrophication) harmful to the organisms in a lake?
What will be an ideal response?