What is the main function of the circulatory system in multicellular organisms?

a.
to bring oxygen into the lung

b.
to put carbon dioxide into all blood vessels

c.
to expel waste products from the body

d.
to transport materials throughout the body

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

Which statement explains how gravity and intertia work together