The Earth gets its heat from the sun.
Rip currents are mainly caused when the sea is rough and large waves break into the shore. the water from the previous large wave tries to find a weak spot in the incoming wave and when it finds it, the water quickly pulls away from the shore causing dangerous rip currents. This type of currents have caused numerous deaths.
The answer is: guess. Estimate. Like guessing a forecast. Or such.
Answer:
Because it requires more resources.
Explanation:
China population statistics are unusual for a developing country because high population requires more resources to fulfill their basic needs and china population is approximately 1.5 billion which is too high but china can fulfill their needs due to their strong economy but this high population can't be manageable for those countries that have weak economic condition or for a developing country so this statistics are unusual for developing country.