The law that states rock layers closest to the surface are the newest or youngest rock is
a. law of original horizontality
b. law of superposition
c. law of original lateral continuity
d. law of gravity and oppositional force
e. law of cross-cutting relationships

Why is it important to study each branch of earth science?

Match each description to the level of organization

Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.