Using GCSE Physics: What percent has decayed after 1 half-life?
1. 50%
2. 25%
3. 75%

What are the proteins in connectivity tissues of your foot examples of?

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

Pl as time goes by and water goes through the water cycle again and again, the amount of water on earth: increases decreases ostays the same goes up and down