20. The Earth's core is made from iron and nickel and is divided into parts.
21. The Earth's inner core is made of
and outer core is made of.
22. The magnetic north pole in reality is the Earth'smagnetic pole.
23. The magnetic south pole in reality is the Earth'smagnetic pole.​

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?

See the attachment and solve question 5th