Rivers and streams are a big source of mechanical weathering. They cut through rocks and carry small fragments with them down to river deltas. A river delta is where the river meets the ocean. What kind of rocks would you expect to see in river deltas? Question 4 options: Igneous rocks Sedimentary rocks Metamorphic rocks

sedimentary rocks

Explanation:

sedimentary rocks are rocks that have tumbled down hills like gravel for example

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds