The observation that some modern humans contain Neanderthal DNA suggests _____________________ occurred

between H. sapiens and Neanderthals. Fill in the blank(s) with the appropriate word(s).


interbreeding

Biology & Microbiology

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A particular fish has an internal salinity of 17 parts per thousand. It is in a freshwater river with a salinity of 0 parts per thousand. The fish is in a hypertonic environment

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following is mismatched?

a. netted veination - dicotyledons b. vascular bundles distributed throughout the stem - monocotyledons c. one cotyledon - monocotyledons d. floral parts in multiples of four or five - dicotyledons e. true secondary growth - monocotyledons

Biology & Microbiology

A hummingbird that pollinates morning glory

flowers and nests in the crotch of an apple tree. The apple tree is not harmed or helped by the hummingbird. The relationship between the hummingbird and the apple tree is a

a. mutualism. b. commensalism. c. competition. d. parasitism. e. predation

Biology & Microbiology

Which of the following highlight the benefits of soil to plants?

A. soil supplies materials B. soil harbors nitrogen fixing bacteria C. soil has water holding capacity D. soil allows for air to be supplies to roots E. all are plant responses during heat and water stress

Biology & Microbiology