Low air pressure systems are usually associated with   a. clear, dry weather   b. cloudy, wet weather   c. cold, dry weather   d. hot, dry weather

Low air pressure is related with high humidity. This is due to molecules of water (H2O) replace molecules of nitrogen (N2) and molecules of oxygen (O2). Water molecules are lighter than nitrogen and oxygen molecules (molar mass of H2O is 18 g/mol, molar mass of O2 is 32 g/mol, and molar mass of N2 is 28). Then lower mass means lower weight which translates into lower pressure (remember air pressure is the weight of the air per unit of area). Then, the answer is the option B. cloudy, wet weather

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.