How has the study of mitosis affected scientists’ knowledge of cancer?
it led to a study of how to induce cancer cells to divide more rapidly.
it led to an understanding of how cancer cells divide so rapidly.
it led to the development of contact-inhibition regulators.
it led to the discovery of how to prevent cancer cells from dividing.

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

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

Explain how light energy is turned into chemical energy? ! due tomorrow!