How do humans affect the carbon cycle? Using pencil to write, exhaling carbon dioxide, wearing sunscreen or inhaling oxygen?
NEED HELP ASAP

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Which is the graph of the piecewise function f(x)? f(x) = image for option 1 image for option 2 image for option 3 image for option 4

Idon’t understand and i need the answer! you