Which of the following is the best example of physical weathering?
a. sediment piling up at the mouth of a river b.
plant roots growing through concrete and splitting it c.
waves carrying sand away from a beach d.
small rocks being carried along a river bed

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

For the following reaction, 3.70 grams of oxygen gas are mixed with excess carbon monoxide . the reaction yields 8.25 grams of carbon dioxide . carbon monoxide(g) + oxygen(g) carbon dioxide(g) what is the ideal yield of carbon dioxide? grams what is the percent yield for this reaction? %