
If the half-life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds? <span>
A. one-fourth</span>
Hey there!
The answer is D, Salinity.
Salinity is the concentration of salt in water. Ocean water often has high salinity and this can contribute to things like upwelling and water density- but these all start from salinity.
Hope this helps!
Their atomic number increases
Answer:
Here,
0.01040 m as an integer= 1.04 × 10-2
<span> reason is that there is no land to slow down the wind. Also, wind is caused by differences in air pressure</span>