When do the first land vertebrates appear in the geologic time scale?

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Why would satellite imagery be more useful than a map in some instances? check all that apply. provides landmarks such as buildings is an overhead view of earth’s features can be used when internet is not available provides small details of roads for digital maps provides various methods of transportation to a location

Which of the following is a common response to cell signaling?