Answer:
B. The order in which specific traits may have evolved
Explanation:
pH = -log[H₃O⁺(aq)]
here the pH is given as 2.40.
Hence,
2.40 = -log[H₃O⁺(aq)]
log[H₃O⁺(aq)] = -2.40
[H₃O⁺(aq)] = 3.98 x 10⁻³ M
= 4.0 x 10⁻³ M
Hence, the hydronium ion concentration in juice is 4.0 x 10⁻³ M.
Since, the pH is less than 7, the juice is acidic.
When studying the
movement of heat, what does the term "system" refer to any quantity
of matter of fixed identity of the chosen study. “Surroundings" refer to
the rest of the universe beyond the boundary of your chosen study or system.
Answer : The correct option is, (C) 
Explanation :
Neutralization reaction : It is a type of chemical reaction in which an acid react with a base to give salt and water as a product that means it reacts to give a neutral solution.
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
When potassium hydroxide react with sulfuric acid then it react to give potassium sulfate (salt)and water as a product.
The balanced chemical reaction will be:

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.
In the balanced chemical reaction,
and
are reactants.
and
are products.
Hence, the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid is, 
Answer:
Vitamin A is important for normal vision, the immune system, and reproduction. Vitamin A also helps the heart, lungs, kidneys, and other organs work properly. There are two different types of vitamin A. The first type, preformed vitamin A, is found in meat, poultry, fish, and dairy products.