Which of these are the main working cells of the specific immune response? a) histamines and interferons, b) antigens and antibodies, c) b cells and t cells, d) self and nonself cells

Which of the following is not a potential result of deforestation?

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.