The deer population in one state is approximately 700,000 the deer population in another state is approximately 450000 what is the total approximate deer population in these two states express in scientific notation

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g