Answer: 1, 2, 4 are accurate.
Explanation:
1. Joe is on a hill (on a trail) above the ocean. The beach and ocean are at similar altitudes. Therefore Joe is at a higher altitude than if he was at the beach.
2. Since Joe is on a hill, he has a higher altitude than at sea level. Air at a higher altitude has lower density because there is less air "ontop" of itself than at lower altitudes. As well, his hill is above the ocean, which means there is a lot of water, making the air more humid than where he is. Humidity also makes air denser.
4.The air pressure will decrease if Joe goes up to higher altitudes because there will be less air on top of itself.
DNA is being used as a template to make a molecule of mRNA.
Answer:
d) levels of nitrate pollution in local waterways
Explanation: This type of data can be expressed and measured numerically.
Density is measured in mass per volume thus C would be the answer.
2.17 g / cm³
The modern era of flight lifted off in 1783 when two brothers demonstrated their invention, the hot air balloon, before a crowd of dignitaries in Annonay, France.
