A. In what layer can a hot-air balloon travel? B. Why can't a hot-air balloon go to higher layers?

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

Put these ecosystems in order of least biodiversity to most biodiversity 1. mediterranean forest 2. indonesian rain forest 3. arctic ocean

Ineed , i need to create a power point in life science here is a picture explaining a little what the topic is about, me with some information for my slides : (