1)a dog pants because
a) evaporation causes cooling
b)evaporation gets rid of excess water in the body
c)it is tired
d)painted to raise body temperature
2) which is necessary for a feedback mechanism
a)control unit
b)effector
c)sensor
d)all of these
3)in moist soil, terry the ameba absorbs as much water from its surrounding as diffuses out of its cell this is an example of
a)homestasis
b)dynamic equilibrium
c) thermoregulation
d)feedback

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?

In what for do plants utilize nitrogen? why do they need nitrogen?

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake