Index fossils<span> can be </span>used<span> to help determine the relative age of </span>rock<span> layers. </span>Index fossils<span> are from species that only existed for a short time. </span>Index fossils<span> are found in</span>rock<span> layers. Trilobites and Graptolites are </span><span>index fossils.</span>
It wasn’t as powerful because your sense of smell enhances your sense of taste
because it makes the environment to be present with chemical bonds
The alkanes are saturated hydrocarbons which include propane, methane, ethane and other higher of saturated hydrocarbons.
The answer to the given problem is the letter "A" Single covalent bonds only.
The Alkanes are hydrocarbons that contain "Single Covalent Bonds Only".
