1. Choose a scientific theory and describe the theory. You will describe the theory in 2-to-4 well-written paragraphs. Who developed the theory? How did the scientist come up with the theory? Has the theory changed over time? How has the theory impacted scientific thinking? Explain an experiment you could run to test the theory, including the design and execution, and any observations you can make of the world around you related to the scientific theory. How do these observations support or refute the theory?

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.