What did you include in your response? Check all that apply. All elements in group 13 have 3 valence electrons. Losing electrons during chemical reactions causes metallic behavior in elements. It is easier to lose 3 electrons than it is to gain 5, so most group 13 elements behave as metals. Having fewer electron shells makes it easier to gain electrons. Boron has so few electron shells that it is just as easy for it to lose electrons as it is to gain electrons, so it behaves like a metalloid.

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions

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.

What part of the body contains bile, an enzyme that break down lipids?