A word root is the base part of a word (i.e., less any prefixes and suffixes).
To change the meaning of a word, a prefix can be added to the front of the word root, or a suffix can be added to the back. Quite often, a prefix and a suffix are added to a word root to change the meaning. (Prefixes and suffixes are known as affixes.)
Answer:
C. Do not contain enough oxygen to support plant and marine life
Answer:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Explanation:
The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time (
), in grams, is described below:
(1)
Where:
- Initial mass, in grams.
- Time, in years.
- Time constant, in years.
The time constant can be found from half life (
), in years, described in statement:
(2)
If we know that 
, 
and 
, then the current amount of the sample is:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
<span>Infrared images are basically temperature maps of the land, water, and cloud-top surfaces "seen" by the satellite sensor. Very cold surfaces, such as high cloud tops emitting little infrared radiation, appear bright white . Surfaces with intermediate temperatures appear in gray shadings.
</span><span>The simple rule for Infrared (IR) images is: Warm temperatures appear in dark shades. Cold temperatures appear in light shades.</span>
