The united states , canada , japan , and england are all examples of ? 1. developed nations
2. developing nations
3. low-income nations
4. middle-income nations
5. transitional nations

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

How long does it take a skateboarder going 6.0 m/s to come to a complete stop if she slows down at a rate of 2.0 m/s^2