What is the main cause of a human-created mass extinction? a. a decrease in the amount of ozone in the atmosphere b. an increase in greenhouse gases c. a decrease in the number of nonnative species introduced d. an increase in the human population

Which organelle releases chemicals that break down large food particles into smaller ones?

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Some scientists argue that global warming is related to buming fossil fuels to produce energy o increased use of fertilizers loss of forested areas a of the above