How does the immune system work together with the circulatory system to function properly?

a.
the immune system's red blood cells fight and destroy foreign antigens.

b.
white blood cells move through the body (to parts where they are needed) in the blood vessels of the circulatory system to destroy pathogens.

c.
the circulatory system's arteries cause the immune system to work harder by bringing oxygen-depleted blood to the infection site.

d.
red blood cells released by immune cells cause increased blood flow to the infection site; this increased blood flow brings other red blood cells to the area more quickly.

What happens when the cell copies its chromosomes

What is the statement plant growth is affected by the color light

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.