What are the tiny invaders being discussed in this article? Where are they arriving? Why are they arriving there? (Site 1)

Which of the following best describes the economy of africa?

The specific heat of the three substances in the image are given in the table. stamped concrete: 0.75, grass covered soil: 1.01, water: 4.18. place the areas in order based on how fast they’ll heat up on a sunny afternoon. start with the fastest and end with the slowest.

What is the amount of organic matter in all living organisms in a habitat called?