How have increased population levels negatively affected the physical geography of Africa?

While most people who lived in ancient egypt and the middle east avoided settling in nearby deserts, those regions protected them from their enemies. why do you think this was true?

¿cual es mas alta en baja california, la migracion o la inmigracion?

Which of the following can scientists estimate geologic time? a. observing rock sequences b. radiometric dating c. comparing fossils d. all of these