Biology

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Why are there ants in the house?
Biology

Why are there ants in the house?

It's almost impossible to count exactly how many ants are on this Earth, but the estimate is about 10 billion billion.

March 18, 2020
Why are some trees hollow?
Biology

Why are some trees hollow?

We often see some old trees, although the trunk is hollow, but the leaves are still green. So how do trees survive when their trunks are empty?

March 1, 2020