According to the periodic table of the elements, which set of elements has similar properties?.

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

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.

What does the first stage of a multistage rocket do?