Mechanical weathering does not change the of a rock

Which of the following best describes brazil's economy from 1650-1880? a. it gradually shifted to manufacturing as the industrial revolution progressed. b. it was based on mining. c. it was based on plantation agriculture, where slaves served as a labor force. d. it was based on small, family-owned farms.

Triangle with the the sides 72 and 75 and x. also other trsingle withsides 24 25 and 7. what is the value of x.

Ineed , i need to create a power point in life science here is a picture explaining a little what the topic is about, me with some information for my slides : (