Which of the following statements is true about catalysts? (1 point) a. catalysts slow down the rate of chemical reactions. b. all catalysts are enzymes c. catalysts are used up during a chemical reaction. d. catalysts lower the activation energy of a chemical reaction.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary

What type of graph presents information about how often certain or traits occur?