Okay, can someone please explain to me bony fish and cartileginous fish? And also gaseous exchange in frogs. (please don't spam for points, that's not very nice) Also please like, dumb it down a bit if that's not too much to ask.

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?

Pl which diagram illustrates prophase?

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.