1. When cities in the Northern Hemisphere are having their coldest temperatures, what is happening in the Southern Hemisphere?
2. The two cities near the equator have nearly the same temperature all year. Is that true for other places?
3. What is the variation in temperature over the course of a year called?

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment