How many tiger species are there left? There are generally considered to be eight subspecies of tiger (Panthera tigris), three of which are now extinct.…
How did the Babylonians represent zero? The Babylonians didn’t have a symbol for zero. Later, they added a symbol for zero, but it was only…
How can you predict the color of a flame test? Because each element has an exactly defined line emission spectrum, scientists are able to identify…
Why are trawlers bad? Why is bottom trawling destructive? The problem with bottom trawling as a fishing method is that it’s indiscriminate in what it…
Do some cherry trees not produce cherries? When cherry tree blossoms, but no fruit appears, it’s a good indication that poor pollination is occurring. The…
What is the most rare shark to see? Speartooth Shark – Endangered The speartooth shark (Glyphis glyphis) is one of the rarest shark species on…
Can a dog feed itself? It depends on the dog. The vast majority of dogs, however, will stop eating once they’ve had enough. They might…
What Licence does a DJ need? As a general rule, if you play or use music in public in a commercial context, you are legally…
Why we need to develop nonconventional energy sources give 2 reasons? Benefits of Renewable Energy Generating energy that produces no greenhouse gas emissions from fossil…
Who created the term Trinity? Tertullian, a Latin theologian who wrote in the early third century, was the first to use “Trinity” “person” and “substance”…
When did railroads begin in America? 1830 The first railroad charter in North America was granted to Stevens in 1815. [4] Grants to others followed,…