What is the last common chimp-human ancestor? The last common chimp-human ancestor was probably about seven million years ago, possibly, although there are no remaining fossils of this animal. It is often mistakenly said that humans evolved from chimpanzees, but this is not the case. Both chimpanzees and humans evolved from a common ancestor in […]
#1349 What is the last common chimp-human ancestor? Read More »
How do bears get enough food? Bears are able to find enough food because they have an incredible sense of smell, excellent vision, and they can eat almost anything. This is a slightly difficult question because there are lots of different types of bears and they are all different sizes. The polar bear is obviously
#1337 How do bears get enough food? Read More »
Why are muskox invisible to satellites? Muskoxen are invisible to heat detection cameras on satellites because they are extremely well insulated by their fur. Muskox are called muskox because of the smell the males produce during mating season. They have a gland called the preputial gland which produces a strongly scented fluid. The preputial glands
#1333 Why are muskox invisible to satellites? Read More »
What was an auroch? An auroch is a type of wild cattle that went extinct during the Bronze Age. It is probably the wild ancestor of modern domestic cattle. There is a lot of talk about trying to bring aurochs back from extinction, but I don’t know if that will happen. The word auroch comes
#1330 What was an auroch? Read More »
What is Agent Orange? Agent Orange is a herbicide that is also a defoliant. That means it makes trees lose their leaves. Agent Orange got its name because the 55 gallon barrel it was stored in had an orange band around it. The US military used several different types of herbicides and they all had
#1329 What is Agent Orange? Read More »
How big was the giant sloth? The giant sloth’s scientific name is Megatherium americanum, and they were about the same size as an elephant. We are very used to the two different types of sloth that we have on Earth today. They re divided into two-toed and three-toed sloths depending on … wait for it
#1317 How big was the giant sloth? Read More »
Why are bird nests s strong? The way that birds build nests depends very much on the birds. Different birds use different materials, different methods, and some birds don’t even build nests at all. However, the nests that birds build in trees tend to be strong because of their saliva. Birds that don’t build nests
#1309 Why are bird nests so strong? Read More »
Why is a pronghorn so fast? The pronghorn evolved to have phenomenal speed so that it could outrun predators that no longer exist. A pronghorn is a hoofed mammal that lives in Western and Central North America. It belongs to the artiodactyl family. This family contains antelopes, hippos, deer, giraffes, camels, and 265 other animals.
#1307 Why is a pronghorn so fast? Read More »
What do mitochondria do? Mitochondria produce almost all of the chemical energy that cells need for all of their functions. Without the mitochondria, we can’t do anything. The word “mitochondria” was created in 1898 by a microbiologist called Carl Benda. He took the Greek word “mitos”, which means “thread”, and “khondrion”, which means “little granule”.
#1299 What do mitochondria do? Read More »
How do circadian rhythms work? Your circadian rhythm is governed by a small group of cells in the center of the brain called the suprachiasmatic nucleus. Most living organisms has a circadian rhythm. It governs the processes of the organism and sets a cycle over a 24-hour period. The word “circadian” is from the Latin
#1292 How do circadian rhythms work? Read More »
