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vredina [299]
4 years ago
10

What structure do insects have for breathing (A) gills (B) tracheae (C) skin (D) lungs

Chemistry
1 answer:
den301095 [7]4 years ago
7 0
I believe tracheae!!!!
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Why is it important to protect Earth’s water, land, and air resources?
yawa3891 [41]

Water - water is not ever-lasting. Once we consume all the water, there wont be water, and that means there wont be life. Also, if we sum up the wasted water plus the contaminated water, we get a scary amount of water that isn´t being used properly or at all.

Land - land is also a basic need in our lives. We all now that there are alternative solutions to planting on land such as hydroponics, but they don´t work the same. In order to have plants (food), we need to have good and well-took-care-of land.

Air - we need air to breathe, preferably quality air. If we pollute the air we have, we´re damaging a very important resource, plus, if we cut too many trees like we do now, we´re only making things worse.

Hope it helped,

BiologiaMagister

7 0
3 years ago
I NEED HELP!!!!! 14 points and brainliest to whoever answers correctly first!!!
Bess [88]
That is a typical neutralization reaction of an strong acid (the first proton of the sulfuric acid) and a strong base (sodium hydroxide ). Usually in a neutralization reaction the products of the reactions are salt (sodium sulfate) and water
4 0
3 years ago
How to prove that NaCl is homogeneous mixture.
lesantik [10]
I'm not sure if this is your question but with NaCl (salt) and water it is homogeneous because when mixed, all the salt particles are even throughout and diffuse throughout the water.
6 0
3 years ago
Which of the following pairs of elements can combine to form an ionic compound?
Luda [366]

Answer:

D.) magnesium and sulphur​

Explanation:

Generally, ionic bonds form between a metal and a nonmetal.

Generally, covalent bonds form between two nonmetals.

Generally, metallic bonds form between two metals.

Nonmetals are located on the right side of the periodic table (apart from the noble gases in the final column). Hydrogen is also a nonmetal. Metals are every other element in the periodic table.

A.) Hydrogen (nonmetal) and carbon (nonmetal) = covalent

B.) Aluminum (metal) and magnesium (metal) = metallic

C.) Silicon (nonmetal) and chlorine (nonmetal) = covalent

D.) Magnesium (metal) and sulphur (nonmetal) = ionic

8 0
2 years ago
A hydrate of cobalt (III) oxide has the following formula: Co2O3 - x H2O. The water in a 3.41-g sample of the hydrate was driven
OleMash [197]

Answer: the value of X is 1

Co2O3.XH2O = Co2O3.H20

Explanation:Please see attachment for explanation

5 0
3 years ago
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