<span>The question is asking whether it is true that the defining characteristic of deserts is their high daytime temperatures. This is actually false, as deserts are defined as places with a very small precipitation - rainfall. In fact, the biggest desert on Earth is Antarctica, which is very cold! Some deserts are hot, for example Sahara, but not all of them.</span>
What is the world's population ? Currently, it's 7.4 billion. So 1/10th of the world's population would be 740 000 people.
There are two countries in this Plain: Bangladesh (150 million) and Pakistan (180 million) - that's in total 330 million.
Also, numerous Indian states are in this plain: Uttar Pradesh (200, 630 million so far), Bihar (100, that makes 730), Haryana (30 million, so we already have 760 million)
So the answer is true, and likely it's a little more than one tenth.
<span>Tropical open ocean waters have the highest rate of primary productivity in the world's oceans: b. False.
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It causes volcanic reactions which when lava touches water it turns to rock. And tsunamis can cause lakes or other bodies of water to form were there was no body of water