Which of the following is an effect of having more oxygen in Earth's atmosphere?
Select one:

Larger, more complex life-forms can evolve.

Earth gets warmer with more oxygen in the air.

All life requires oxygen. Without it, there would be no living organisms

More oxygen means less nitrogen in the air

What material did the moon come from?

What is one reason why transpiration is important in plants? question 19 options: it produces food from the sugar in the plant cells. it enables the flow of water out of the plant. it produces carbon dioxide in the leaves of the plant.

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos