Who said atoms are neither created nor destroyed in chemical reactions?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical