A bit over 2 billion years ago, cyanobacteria nearly wiped out all other life on Earth. How did they do it?
by producing oxygen
What is the largest toothed predator in the world?
sperm whale
What are the only plants that live in the ocean?
Seagrasses
Which single mammal species on Earth makes up the largest biomass?
Cows, over 650 million tonnes
The Hyrax is a 2-5kg African and middle eastern mammal, very similar to a marmot or a weasel. What species are they most closely related to?
Elephants and/or manatees
Is the horseshoe crab more closely related to crabs, spiders, or trilobites?
spiders
organisms that can move around and eat other organisms as food are called...
...animals
whats an exoskeleton?
Its a skeleton on the outside of an Athropods body.
Name a reptile that lives on water
crocodile
Kangaroos and polar bears share what unusual trait?
They're almost exclusively left-handed
Which bird lays the smallest egg proportional to its body size?
ostrich
Which bird lays the largest egg?
Ostrich!