Which of the following facts is the best evidence that humans and salamanders had a common ancestor? A) Both species eat meat.
B) Both species have pharyngeal arches and slits when they are embryos.
C) Both species can swim.
D) Both species have skin.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

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 is the most important inorganic material for livings things? ! due tomorrow!