The Permian period ended and then rapid speciation occurred as new animal and plant forms evolved. The most likely explanation for this is _____

I) adaptive radiation II) ecological opportunity III) lack of competition IV) morphological innovation A) just one of the above
B) two of the above
C) three of the above
D) all of the above


C

Biology & Microbiology

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The production of chlorophyll molecules requires most plants to obtain __________ from the

soil.

a. calcium b. magnesium c. nitrogen d. potassium

Biology & Microbiology

A pinniped is observed as lacking external ears, and it appears to propel through the water using its hind flippers only. What kind of pinniped might this be?

a. Phocids b. Sirenia c. Eared seals d. Walruses

Biology & Microbiology

Which of the following is a deforested area

more likely to experience? a. nutrient poor soils. b. soil loss. c. loss of species diversity. d. warmer temperatures. e. all of these.

Biology & Microbiology

Where do eggs mature and get released from?

A) oviduct B) uterus C) vagina D) follicle

Biology & Microbiology