Biology, 27.06.2019 10:30, victoralaquinez
Why is the amount of carbon dioxide in the atmosphere currently increasing? ozone hole burning fossil fuels photosynthesis cutting down of tropical rain forests
Answers: 1
Biology, 21.06.2019 20:00, Tyrant4life
In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia
Answers: 1
Biology, 22.06.2019 01:30, ayoismeisalex
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 07:20, Maria3737
What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures
Answers: 2
Biology, 22.06.2019 07:30, redbeast677
The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?
Answers: 1
Why is the amount of carbon dioxide in the atmosphere currently increasing? ozone hole burning foss...
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