I believe that D is the answer to your question, even though this is a complicated one.
Answer:
(3) Rusting of almirah is a chemical change since during rusting, a new chemical compound called hydrated iron oxide (rust) is formed. ... (7) Making a fruit salad with raw fruits is a physical change since there is no change in the chemical properties of the fruits but only the physical appearance has changed.
Explanation:
I just got it right on my test
The correct answer is <span>Ka = [H3O^+][HSO3^-]/[H2SO3] </span>
In a food chain, plants are primary producers, as they produce biomass.
Answer: plants
