Is there someone that has a big brain and can help me? PLease? I'm porrr.

The valve seat performs two functions: it provides a seal for the valve in the combustion chamber, and it provides a cool surface to carry heat away from the valve. most valves use a seating angle.

Want free brainliest and free points? answer this drivers ed question and i got you! when turning left, watch for who are frequently struck by left-turning vehicles. a. bicyclists b. motorcyclists c. large trucks d. pedestrians

States might choose to cooperate at the regional or global level for all of the following reasons except (2 points) a.) to gain regional political influence b.) to engage in dispute resolution c.) to assure basic human rights d.) to encourage economic interaction e.) to increase national sovereignty