Whales

There are many types of whales.Blue,Sperm, Pilot, Sowerby's, beaked, porpoise, Northern Right, Humpback, Gray, Bowhead, Dolphin, Striped dolphin, Narwhal, beluga, Orcas . Toothed Whales eat Octopus , Shark, & Squid. Baleen Whales eat krill & plankton. Orcas eat penguins.
Baleen Whales eat 80 tons of krill every day. the biggest is the blue whale.It is 90 ft. long.
Orcas hunt in groups. The biggest toothed is the Sperm Whale. Female's give birth in the middle of watter.
Humpback Whales weigh 30 to 50 tons.

Tiger Teeth

Tigers have big jaws to hunt big prey. Curved teeth called canine teeth are 3 inches long & are used to suffocate prey. The Carnassial teeth are used to rip meat.
Tigers don't chew. They swallow riped off meat whole.

Cells

You have 6 main types of cells. Red Blood Cells carry oxygen around the body. Nerve Cells send messages from the Brain.
Muscle Cells let you move. Bone Cells are shaped like tree trunk. White Blood Cells kill germs.
Skin Cells are dead 20 to 30 layers deep. You are made of 1,000,0000's of cells.