In terms of cell division, normal cells differ from cancer cells in at least four ways. Normal cells require external growth factors to divide. When synthesis of these growth factors is inhibited by normal cell regulation, the cells stop dividing.
The choice that is NOT an example of critical thinking is "implementing the first solution to a problem identified." The rest of the choices are all examples of critical thinking. The correct answer is C.
Answer:
it had more than one lens
Explanation:
The first compound microscope had more than one lens located in the objective and eyepiece. Both the eyepiece lens and objective lens are convex. The compound microscope is used to magnify specimen at high magnification (40 - 1000x), which is achieved by the combined effect of the two sets of lenses.
<span>The correct answer is A. The moon's gravity pushes on the earth. The push indents the earth's watery envelope and creates tidal bulges. Where the water is pushed in is high tide. There are two types of tides on Earth - high tide and low tide. Both of these types of tides are affected by the Earth's natural satellite, the Moon. Due to its gravity, everything on Earth is pushed, however, waters on Earth are under the strongest impact by this.</span>
Answer:
Earth's creatures are on the brink of a sixth mass extinction, comparable to the one that wiped out the dinosaurs. That's the conclusion of a new study, which calculates that three-quarters of today's animal species could vanish within 300 years.
Explanation: