I will give 50 points if you answer all questions 1. A by-product of respiration which is necessary for photosynthesis is

oxygen
carbon dioxide
sugar
water vapor

2. A by-product of photosynthesis which is necessary for respiration is

oxygen
carbon dioxide
sugar
water vapor

3. Select all that apply.

Exposure to excessive ultraviolet radiation can be harmful to your .

body
breathing
health
skin

4. X-rays are less dangerous to health than ultraviolet radiation.

True
False

5. The rapid reduction in life spans after Noah's flood may be due to .

reduction in shielding effects of the current atmosphere
a change in the properties of the atmosphere
increase in radiation after the flood
all of the above

6. Select all that apply.

The absence of meteorites within the Earth's rock layers indicates that .

the rocks formed rapidly
the rock layers are young
the rock layers are old
the rocks formed very slowly

7. The total amount of carbon dioxide in the atmosphere is estimated to have decreased by 10 to 15 percent since 1900.

True
False

8. Air pollution may have a greater effect on health than on atmospheric temperature.

True
False

9. The overall long-term effects of air pollution are not yet certain.

True
False

14,16 18 reacts with group

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).