Which is not true about a hypothesis? it must be able to be tested. it is in the form of an if, then statement. it contains either an independent or dependent variable, not both. it is a proposed explanation that has not yet been proven to be true.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

How energy move through ecosystem ?