Biology, 28.10.2019 23:31 Akkenson17871
Which of the following is an example of a positive feedback? a.a low level of oxygen in the blood triggers production of red blood cells, which transport oxygen.b. an increase in blood sugar level stimulates the pancreas to secrete insulin, which lowers blood sugar level.c.a tear in the lining of a blood vessel triggers the accumulation of blood platelets, which cause blood to clot.
Answers: 3
Biology, 21.06.2019 12:30
What is one disadvantage of desalination? a - the process kills fish. b - the process uses fuel that is expensive. c - the process makes water that is unsafe to drink. d - the process is too difficult to carry out in big cities. quick taking a !
Answers: 1
Biology, 22.06.2019 04:00
Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.
Answers: 1
Biology, 22.06.2019 07:30
Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables
Answers: 3
Which of the following is an example of a positive feedback? a.a low level of oxygen in the blood t...
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