1) Inaddition to water, mention the other three essential factors for seed germination. 2) What is the function of water in seed germination?

3) Some seeds do not germinate even though you have obtained the essential factors mentioned above. What is the condition called?
* Give two reasons for the situation you mentioned above.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Environmental impacts on evolution : mastery test

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.