Which statement describes potassium-argon dating? potassium-40 decays into argon gas over time. argon breaks down into other elements and compounds. potassium-40 becomes stable when trapped in rocks. argon is unstable and will decay into potassium-40 over time.

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?

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast