The liver acts to keep blood glucose at a relatively constant level. it takes up glucose from the blood when levels are too high, and adds glucose to the blood when levels are too low. are these actions of the liver an example of homeostasis? a. yes, because homeostasis involves the maintenance of constant internal conditions. b.yes, because homeostasis is the interaction between two separate organs or tissues, such as the liver and blood. c.no, because homeostasis involves only positive feedback, not feedback inhibition. d.no, because homeostasis involves only tissues and organs from the same organ system.

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.

Which nucleotide component contains nitrogen