Kristen cut her hand on a piece of glass. as the blood clots, how do white blood cells prevent bacteria on the glass from infecting her blood?
they bring more oxygen to the site for repair.
they destroy pathogens that enter the wound.
they form the platelet plug.
they cause blood vessels to constrict

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Which food could be transported in a galvanized metal container?

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.