Question

cockroach has a hard body covering made up of substanses called​

Answer 1

Answer:

A cockroach is similar to other insects in the way its body is constructed. ... Most cockroaches have three joints on each leg, which means they have 18 knees! The skeleton is made of a hard substance called chitin. When a skeleton is on the outside, it is called an exoskeleton.

Explanation:

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Answer 2

Answer:

chitin

Explanation:

A cockroach is similar to other insects in the way its body is constructed. The body is divided into three parts—head, thorax, and abdomen. Three pairs of legs are attached to the thorax. Most cockroaches have three joints on each leg, which means they have 18 knees!

The skeleton is made of a hard substance called chitin. When a skeleton is on the outside, it is called an exoskeleton. The exoskeleton supports and protects the roach’s insides. Because it is hard, the exoskeleton cannot grow. To get around this problem, a cockroach sheds its exoskeleton several times per year. Then its body grows quickly before the new exoskeleton forms. When the exoskeleton has just been shed, the cockroach’s skin appears very light. Then, after about eight hours, the skin becomes dark again