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agasfer [191]
3 years ago
15

The exoskeleton of arthropod is?

Biology
1 answer:
Minchanka [31]3 years ago
8 0

The exoskeleton of an arthropod is chitin.



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Animals respond to threats in their environme
dimaraw [331]
I say A not sure tho but I did get a grade 5 in biology
5 0
3 years ago
there are multiple chickens and rabbits in a cage there are 72 heads and 200 feet inside of the cage how many chickens are in th
schepotkina [342]
The answer is 44 chickens and 28 rabbits.

We have a system of two equations.
x - the number of rabbits
y - the number of chickens

Both chicken and rabbit have only 1 head, so the first equation is: x + y = 72.
Since rabbits have 4 legs and chickens 2 legs, the second equation is: 4x + 2y = 200.

Now, let's solve the system:
x + y = 72
4x + 2y = 200
___________
y = 72 - x
⇒ 4x + 2 · (72 - x) = 200
4x + 2 · 72 - 2 · x = 200
4x + 144 - 2x = 200
2x + 144 = 200
2x = 200 - 144
2x = 56
⇒ x = 56 ÷ 2 = 28
So, there are 28 rabbits.

Since
y = 72 - x = 72 - 28 = 44,
there are 44 chickens.

7 0
3 years ago
What takes place in ribosomes?
jeka57 [31]
A
A is correct for this problem
8 0
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After finishing a psychology test, you try to relax by engaging in some meditation techniques. doing these exercises should incr
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