Match the level of organization in nature

lvl 2 - Molecules consist of atoms

lvl 3 - Cells consist of molecules

lvl 4 - Organisms consist of cells

lvl 5 - Populations consist of organisms

lvl 6 - Communities consist of populations

lvl 7 - Ecosystems consist of communities interacting with their environment

lvl 8 - The biosphere consists of all ecosystems on Earth

Explanation:

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products