A student uses a sling psychrometer to measure relative humidity. The dry bulb thermometer reads 59°F, and the wet bulb reads 41°F. What is the relative humidity?

Iwould say d. eye contact and body language because you aren’t using any spoken communication. hope this : )

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

D. a mountain abd are made by volcanos and tectonic plates