Two C atoms form a double bond. Each C is bound to two H atoms. Which statement is true? a_The bonds orient like tripods or pyramids.

b_All the atoms lie in a line.

c_The bonds orient in a tetrahedral fashion.

d_All the atoms lie in a plane.

e_The groups rotate around the C=C bond.

~fourth largest plate ~includes parts of the indian and atlantic oceans ~subducts below the eurasian plate on the west side ~ the arabian and somali plates form boundaries with it what is the name of the tectonic plate described above? a) african plate b) eurasian plate c) north american plate d) indo- australian plate

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons