𝗪𝗛𝗬 𝗱𝗼 𝘁𝗿𝗮𝗶𝗻 𝗱𝗼𝘀𝗲𝗻'𝘁 𝗵𝗮𝘃𝗲 𝗿𝘂𝗯𝗯𝗲𝗿 𝘄𝗵𝗲𝗲𝗹𝘀 𝗹𝗶𝗸𝗲 𝗰𝗮𝗿𝘀❓
✅There are many factors that affect the kinds of wheels that need to be used for different kinds of vehicles, but the most important one among them is friction.
❗Since trains need to travel at fast speeds constantly with a lot of weight, they require less friction, which is provided by the metal wheels, whereas cars have to tread uneven terrains and all kinds of roads that require a high value of friction, which is provided by rubber tires.
How do lizards and snakes smell?
Lizards and snakes smell by licking the air with their tongues.
The tongue picks up scents in the form of airborne molecules that the animal then draws back into its mouth.
Thanks to this unique organ, both lizards and snakes have a sharp sense of smell, which they use to track prey and find potential mates.