Answer:
The Earth's Tilt
Explanation:
Due to the Earth's tilt, more of the Sun's rays directly hit a particular region of the Earth during the summer months than during the winter months. As a result, the average temperature is increased during the summer.
Tina should think about results and why aspirin did not affect the growth rate of tomato plants. She may find the answer in literature or can apply the results on the new situation. She may change the hypothesis and alter some factors in the experiment to test the new hypothesis.
He should show protons (and neutrons) in the nucleus of the atom.
I believe the answer is delta.
1) When a star's temperature or size increases, its luminosity increases. In other words it seems more bright.
2) The electromagnetic spectrum is used to determine different types of light waves (infrared, visible light, x-rays etc.) which produced by different kinds of astronomical objects.
