It is said that many creatures will die when the local magnetic field reverses. Why?

These rays are enough to kill any living thing during exposure.

And the earth's magnetic field

These rays can be shielded.

Because these rays are mainly composed of high-energy charged particles.

Charged ions are deflected by a magnetic field in motion.

therefore

The earth's magnetic field protects life on earth like a ton.

When the earth's magnetic field deflects

The strength of the magnetic field will change.

The protective effect will be weakened

Many creatures are thus exposed to high doses of cosmic rays.

He is dead.

In this process

Marine life will take advantage of some advantages.

Because charged ions are difficult to pass through water.

As for ozone,

Independent of magnetic field

It is the oxygen in the sky under the catalysis of ultraviolet rays

Energy conversion occurs.

The reaction produces ozone.

In this process

Absorb the energy of ultraviolet rays.

As for crabs,

There is no evidence that it is a survivor of biological beauty.

But a close relative of a crab.

Belong to crustacea

King crab/horseshoe crab

It is a very, very old animal.

It is said to be the same age as trilobites.