Answer:
B. Hominins evolved an opposable thumb that enabled hands to grasp objects.
Explanation:
Prehistoric hominids evolved opposable thumbs earlier than bipedal walking. The opposable thumbs have been critical during evolution because this position enables the digits to grasp and handle objects.
Answer: The food
Explanation: the independent variable is the one to be changed and in this case, it is the food
It has high melting and boiling point.strong intermolecular forces and polar in nature
approximately 10%
explanation
Transfer of energy through an ecosystem. At each trophic level only a small proportion of energy (approximately 10 percent) is transferred to the next level
