1. which of these is an abiotic seasonal change? a. an earthquake b. a tsunami. the summer d. a volcanic eruption 1. a 2. b 3. c 4. d

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

Which region was the hearth for the largest number of agricultural animals such as pigs sheep and cows

Choose the item that is an example of the geographic theme of place.