Iwill mark the

what is currently the major cause of extinctions?

a. disease

b. invasive species

c. competition

d. habitat destruction

this question does't support enough resioning to answer.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.

b. the american revolution