Biology, 04.08.2019 01:30 nocomprendoplshelp
Throughout the year, areas of the earth's surface are either tilted away from the sun or toward the sun. this is a result of the earth tilting on its axis. what is the main impact of this phenomena? a. it causes tides. b. it influences ocean currents. c. it produces seasons. d. it generates winds.
Answers: 1
Biology, 21.06.2019 21:00
What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones
Answers: 3
Biology, 22.06.2019 01:30
Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.
Answers: 1
Biology, 22.06.2019 10:00
Which of the following human activities resulted in the growth of the north american deer population?
Answers: 1
Biology, 22.06.2019 13:00
Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.
Answers: 3
Throughout the year, areas of the earth's surface are either tilted away from the sun or toward the...
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