Layer Z is found at a depth of 50 to 2,900 kilometers (km) inside Earth. What is Layer X called and where is it found? A. It is the core, and it is found less than 50 km below Earth’s surface.
B. It is the crust, and it is found less than 50 km below Earth’s surface.
C. It is the core, and it is found more than 2,900 km below Earth’s surface.
D. It is the crust, and it is found more than 2,900 km below Earth’s surface.

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.