A student wrote the following about the lungs. When we breathe in, our lungs inflate, sucking air in and pushing the ribsup and out, and forcing the diaphragm down. This is called respiration. Inthe air sacs of the lungs, the air enters the blood. The blood then takes theair around the body, where it is used by the cells. The blood returns to thelungs to be cleaned. When we breathe out, our lungs deflate, pulling thediaphragm up and the ribs down. The stale air is pushed out of the lungs. The student did not have a good understanding of the workings of thelungs. Re-write their description, using correct biological words and ideas.

Convert 0.14 kilograms to grams.grams

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?

On his trip to the galapagos islands, darwin determined that animals on the islands