Biology, 28.07.2019 01:00 rustalex6045
Before the discovery of cells, people believed in the theory of spontaneous generation. according to this theory, living things can come from nonliving things. on the basis of this theory, people believed that maggots that formed on cheese spontaneously arose from the cheese. which two statements disprove this theory of spontaneous generation?
Answers: 1
Biology, 21.06.2019 14:20
Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere
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Biology, 22.06.2019 09:30
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
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Biology, 22.06.2019 15:30
Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody
Answers: 1
Biology, 22.06.2019 16:30
As a result of climate change earths temperature is rising and sea ice is melting what is a likely effect? answer : populations of walruses and polar bears will decline
Answers: 1
Before the discovery of cells, people believed in the theory of spontaneous generation. according to...
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