Which of the following has made it possible for humans to travel long distances throughout their history?

An easy way to calculate the amount of energy available at each level is to what?

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these