What is the significance of Lexington and Concord?

This is science by the way which of the following is an example of an environmental pressure a. the air pressure in the atmosphere b. a lake that is gradually running out of water c. a fight between two members of the same species d. breeding between two members of the same species

When members of congress must vote on a bill that is nonideological of one on which they have no specific position what are the most powerful influences

Evaluate bh for for b = 5 and h = 10