Which best describes franklin roosevelt’s contribution to the yalta conference?.

The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound

How are brightness and size related when it comes to stars