Which statement best describes a possible way that societal decisions were impacted by the 1974 research study? CFCs were commonly used in refrigeration.
CFCs were replaced with other products.
CFCs were causing a large hole in the ozone layer.
CFCs were the focus of a research study.

the answer is a

photosynthesis

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

i think its 100

i hope this !

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.