Answer:
Weather is the state in which a certain part inside the atmosphere is hot or cold.Climate is the usual weather in a certain place in the world or atmosphere.One way weather can affect climate is global warming,which is when the world gets hotter and the ice in the world melts and water rises.
Explanation:
Hello there.
<span>Which substance will retain the largest amount of energy from the sun
</span><span>C. grass
</span>
Answer: It is caused by the tendency of some atoms in molecules to attract electrons more than their accompanying atom.
Answer: (E) 300 bq
Explanation:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
Radioactive decay process is a type of process in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations. The radioactive decay follows first order kinetics.
Half life is represented by 
Half life of Thallium-208 = 3.053 min
Thus after 9 minutes , three half lives will be passed, after ist half life, the activity would be reduced to half of original i.e.
, after second half life, the activity would be reduced to half of 1200 i.e.
, and after third half life, the activity would be reduced to half of 600 i.e.
,
Thus the activity 9 minutes later is 300 bq.