In this expecpt president reagan uses pursuasive speech to , comfort the families of the lost astronauts , argue the nasa should be improved renew hope in americas space program , encourage students to study sience

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 the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.