The use of more advanced tools made of stone, wood, and bone, such as the ones illustrated below, was typical of which period of human history?

a. Paleolithic era

b. Neolithic era

c. Bronze Age

d. Iron Age

What is true of a covalent bond? it is the electrostatic attraction between oppositely charged particles it is the sharing of electrons by overlapping orbitals it involves the exchange of electrons from one atom to another it involves the sharing of

What is not represented by a balanced chemical equation?

What would happen to the dissolved oxygen in the missouri river if large amounts of wasted were dumped into it

Are all atoms are joined together by chemical bonds?

Air contains mostly nitrogen (78%) and oxygen (21%). It also contains other gases, including carbon dioxide and helium, and various pollutants (both gases and solids).

How many neutrons and electrons are in Oxygen⁻¹⁷ isotope?

What is science all about?

What type of change is a substance that changes form but remains the same?

Which side of the mountain experiences high temperature in windward or leeward

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with