Volcanic activity may cause climate change by a. blocking solar energy from reaching the earth's surface. b. shifting the equatorial and temperate zones. c. increasing the earth's overall temperature. d. altering global wind and current patterns.

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.

Disaccharides include what sugar molecules. true or false?