Which of the following correctly characterizes the arachnoid mater? 1. middle layer of the meninges that contains cerebrospinal fluid2. attached to the surface of the brain and spinal cord3. outermost layer of the meninges that contains cerebral fluid4. attached to the inner surface of the cranium and vertebrae

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

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

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus