Biology, 21.04.2021 21:10 roseemariehunter12
How do vaccines work?
A. They activate your immune system so that it is fighting all the pathogens that are in the
environment currently
B. They expose the immune system to a weakened or dead version of a pathogen so that
the body can build a memory of the pathogen to fight future infections.
C. They help the body fight off all the strains of one particular virus
D. They kill viruses that are currently living in the body
Answers: 2
Biology, 21.06.2019 22:20
Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3
Answers: 1
Biology, 22.06.2019 16:20
What is gene flow? apexa: selection for average traits b: when a population splits in twoc: a mutation becoming more commond: genes moving between two populations
Answers: 1
Biology, 22.06.2019 16:30
The united states uses which source of energy to produce almost 40 percent of its electricity
Answers: 1
Biology, 22.06.2019 18:30
Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis?
Answers: 1
How do vaccines work?
A. They activate your immune system so that it is fighting all the pathogens...
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