What have the scientific studies identified as the major cause of acid rain in the united states?
volcanic ash in the air
burning of fossil fuels that release sulfur and nitrogen compounds into the air
excess solar radiation due to the depletion of the ozone layer
o
chemicals still in the atmosphere from the asteroid collision with the earth

i love you and i play fortnite add me rod0107

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

synapse nervous system

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.