9. Knowing what you know about how a substance travels in diffusion, in order for oxygen to leave the alveoli and enter the
blood, there would be a [ HIGHER or LOWER ] concentration of
oxygen in the alveoli compared to the blood.
10. Knowing what you know about how a substance travels in
diffusion, in order for carbon dioxide to leave the blood and enter the
alveoli, there would be a [ HIGHER or LOWER ] concentration of
carbon dioxide in the alveoli compared to the blood.
11. Explain your reasoning for questions #9 and #10.

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?

How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.