Part 3
How thin are mosquitoes' mouthparts?
as thin as a human hair
What do mosquitoes stab our skin with?
They stab our skin with sharp, needle-like mouth parts.
ultraviolet
What do silkworms produce?
silk
What do the cocoons protect the silkworms from?
Ultraviolet rays
True or False
When we feel itchy, we finally realize that a mosquito has stabbed our skin.
True
True or False
Serrated needles hurt more than smooth ones.
False
M O S Q U I T O E S
How do silkworms create cocoons?
They create cocoons by spinning silk thread around themselves.
Give one product that is made to absorb ultraviolet rays from the sun.
Parasols, hats, cosmetics
Paragraph 3
What does "they" refer to in this sentence?
They might not have been successful...
mosquitoes
Paragraph 2- Last sentence
What does "it" refer to in this sentence?
That is why we don't realize mosquitoes have stabbed our skin until it gets itchy.
our skin
TRUE OR FALSE
The durability of plastics and nylons is good for the environment.
FALSE
Why are some products such as parasols, hats and cosmetics made from silk?
They absorb ultraviolet rays from the sun.
Why are natural materials environmentally friendlier than man-made materials?
because natural materials decompose, returning to the earth
Why do mosquitoes' needles touch the nerves in the skin at very few points?
because they are as thin as a human hair and they are serrated
Why don't we realize that mosquitoes have stabbed our skin until it gets itchy?
because their bites are painless
Man-made materials: bad for the environment
Natural materials: ____________________
environment friendly
answers may vary
Paragraph 3
What does "this" refer to in this sentence?
This is not good for the earth.
Man-made materials that don't decompose easily. They remain in the environment. Thus, making it not good for the earth.
What would have happened if mosquitoes had not given painless bites?
They might not have survived well.
Who do you think will benefit the most from the development of painless needles?
Children, babies and their parents will benefit the most.
Give a synonym to the word "decompose"
Break down
Decay
Correct this sentence.
Biomimicry has the opportunity to worsen our problems in daily life.
Biomimicry has the opportunity to SOLVE our problems in daily life.
Products made of natural materials are terrible to the earth.
Products made of natural materials are FRIENDLY to the earth.