Which question can be answered by science?
a. why do you think people should use paper bags?
b. should people be required to reuse plastic bags?
c. should the government regulate the use of shopping bags?
d. what is the effect of paper bags on the environment?

Illustrate, label, and explain how atmospheric carbon and oxygen find there way into a consumer and then back into a producer. include the following terms in your illustration: co2, 02, respiration, photosynthesis, sugar, mitochondria, chloroplast, water, solar radiation

There are only about 250,000 known fossil species. true or false

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i