Hypothesis.
A Hypothesis is an estimation of what might happen and the student's observation before moving on to investigate.
I am going with x-rays; it is the most visible to the naked eye out of all the choices.
3) decrease
Without the green house effect, earth would be like a solid ball of ice and rock.
Life as we know it wouldn't exist without greenhouse gases.
The temperature would drop below 0° Fahrenheit!
Answer:
Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research.
