Explanation:
measuring the change of temperature when 2 liquids are mixed
I think it is d it is definitely not a or b
Answer:
Third option
Explanation:
The answer is the third option or "Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis." Photosynthesis is the process plants use to obtain their own food. Humans do depend on photosynthesis because not only humans eat plants, but animals. Some animals are herbivores which means they only eat plants. If plants cannot create their own food using photosynthesis, then the plant dies. Neither the human nor the animal can eat that plant.
Many animals rely on plants to eat and if all plants cannot perform photosynthesis, then the animals cannot eat. Us humans eat animals which means if the plants die, the animals who eat the plants die, and then humans die. Humans heavily rely on photosynthesis, so the answer is the third option.
Hope this helps.
When an element requires 3 or 4 electrons to complete their octet, they cannot form ionic bond because one require a large amount of energy to completely remove an electron from ones outer shell and transfer it to the other. Ionic bond is permanent transfer of electrons. Thus, they form covalent bond.
Electronegativity difference between elements involved also plays a major role in bond formation. If electronegativity between elements is almost similar, then they will form covalent bonds whereas if difference is large, they will form ionic bond. Calcium and Carbon have greater electronegativity difference and hence it forms ionic bond with Calcium.
