Biology, 06.10.2019 16:00 mirandaaa14
Scientists tested the effect of a fertilizer on the growth of plants. they had 2 sets of plants, group a which gets fertilizer, water and sun and group b which gets only water and sun (but in equal amounts to group a). 1. explain how this scenario is a controlled experiment and identify the manipulated variable.
Answers: 2
Biology, 22.06.2019 02:00
The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.
Answers: 1
Biology, 22.06.2019 05:00
Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?
Answers: 2
Biology, 22.06.2019 09:00
Several billion years ago which gas was the least prevailant in the atmosphere
Answers: 1
Scientists tested the effect of a fertilizer on the growth of plants. they had 2 sets of plants, gro...
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