Astudent visits the beach during a very hot day, she steps on the sand and jumps because it is so hot, what type of heat transfer is demonstrated by the sand in this example.

An enzyme lowers the energy of activation. what does that mean?

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

What is earths lithospheric plates interact at