Theories are generally accepted if:

two or more scientists find them to be true

proven beyond a reasonable doubt

published in a textbook

they are backed by one experiment

What are three task that an ecologist might perform in that field of study

1. You are analyzing a compound in the laboratory. You find that it is made up of carbon, hydrogen oxygen in a ratio of two hydrogen atoms for each carbon atom. How will you classify the compoun A. lipid B. protein C. carbohydrate D. nucleic acid 2.

Which statement is part of the cell theory? A. All cells are produced from other cells. B. All cells are the same. C. Cells are able to make new organisms. D. Cells are independent structures

A wave of negativity that travels across the external membrane of a neuron is

John wants to test how temperature affects the mass of sugar that can be dissolved in water. Which of the following factors will John expect to change in response to the differences between the control group and the experimental group? O A.

What is the interaction between mosquitoes an human beings called?

Which of the following is similar among all living organisms on Earth? cellular function social behavior physical appearance all of these

Lubricants reduce friction by replacing sliding friction with fluid friction, O A. True B. False O

Which of the following has the strongest gravitational pull on the earth? A. moon B. Earths magnetic core C. the atmosphere D. the sun

Ep-31 which is the major cause of fatalities involving small boats