Copper wires used to connect circuits in microprocessors (computer chips) are deposited by passing electrical current through a solution containing copper ions. this is an example of 1. a fuel cell. 2. an electrolytic cell. 3. a voltaic cell. 4. a battery. 5. an electrochemical cell.

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.