The reason for the dramatic decline in the number of measles cases from 1960s to 2010 in the United States was because the vaccine? 1. Contained pathogens to fight against this highly contagious virus.
2. Prevented the development of serious complications after infection.
3. Exposed many people to a weakened form of the measles virus, making them immune.
4. Contained an antibiotic that killed the measles virus, preventing its spread.

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

How many chromosomes are in a gold fish?

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?