<span>
Answer is the first choice - form non-metals</span>. Some acid and metal reactions don't form anything especially with weak acids. But many acids react with metals to form salt and hydrogen, which are considered non-metals.
Answer:
34 calories
Explanation:
One gram of carbohydrates provides total= 4 calories.
2 grams of carbohydrates would provide= 4 x 2 = 8 calories.
One gram of protein provides total= 4 calories.
2 grams of protein would provide= 4 x 2 = 8 calories.
One gram of fat provides total= 9 calories.
2 grams of carbohydrates would provide= 9 x 2 = 18 calories.
Total calories from food that gives two grams each of fat, carbohydrate, and protein= 8 + 8 + 18 = 34 calories.
The human nervous system starts to form very early in the embryo’s development. At the end of the gastrulation phase, an elongated structure, the notochord, is laid down. The embryo thereby changes from a circular organization to an axial one—a critical step in the development of its nervous system.
Answer:
The type of evidence is<u> Mechanical incompatibility.</u>
Explanation:
Copulation is often impossible between different animal species because of the incompatible shape and size of the genitalia.It is called mechanical incompatibility.
This isolation prevents species that diverge from interbreeding thus they lo longer able to mate with each other.
Here morphological difference takes place which ultimately leads to behavioral isolation and thus no mating takes place.
Here snail can not mate because their morphological structures are incompatible.
Answer: B
Explanation:
Each produce food necessary for each organisms.
