Determine why scientist collect information about what is already known when trying to solve a problem?

What are the three major organs of the nervous system

Wegener observed that that coastlines of continents in the Southern Hemisphere had similar grooves. Which of the following supports coastlines far away from one another having similar grooves?

Which is an interconnection of food chains in an ecosystem? A) food web B) trophic chain C) energy web D) producer web

Many plants experience regular periods of dormancy. Which of these best explains the benefits of dormancy? It prevents the plant producing too many offspring. It reduces competition between plants of different species.

What is gel-like fluid that fills most of the cell? A) nucleus B) vacuole C) cytoplasm D) cell membrane

How many kingdoms are in the modern system of classification?

One cell that undergoes meiosis will yield how many independent cells

What type of macromolecule is the sugar fructose?

DNA uses, while RNA uses.

How does pollution affect land, air, and water?