Biology, 04.07.2019 10:00 Bashirar19
Need the heart is a muscular organ that pumps blood. blood that contains waste materials is brought to the heart by blood vessels. this blood enters the (left atrium, right atrium, right and then moves down. the presence of the (atrioventricular valve, valves in the aorta, valves in the prevents the backflow of blood inside the heart
Answers: 1
Biology, 22.06.2019 06:00
Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time
Answers: 1
Biology, 22.06.2019 09:50
The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations
Answers: 2
Biology, 22.06.2019 11:30
Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different
Answers: 2
Biology, 22.06.2019 14:30
Fill in the blank with the best word to complete the sentence. white blood cells protect against and aid in blood clotting when injuries are sustained.
Answers: 2
Need the heart is a muscular organ that pumps blood. blood that contains waste materials is brough...
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