Which layer of the soil profile would be affected the most by weathering and erosion? A 1
B 2
C 3
D4

Please help

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Acontrol during an experiment. might change remains constant does not exist does change

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?