Please answer it’s biology Ecosystem Unit

Which of the following substances is not involved in the chemical reaction that pro- duces smog? a. sunlight b. particulate matter c. automotive exhaust d. ozone

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?