B because when they make tools they make multiple.
a. stimulus
Stimulus is something that can evoke a physiological response, it can be in or external.
Answer:
Here, I'll answer one question for you.
Explanation:
The meaning of dependent means relying on, for example, I depend on my brother to help me with my homework, or I depend on my pencil to write things down. Or like you depend on brainly to help finish with your homework.
The answer is B. - Ivan Pavlov
Answer:
Why does the United States have such a diverse population because when North America was still being discovered many countries came.
Explanation:
First, the French came, I believe, the First Nations, British, and French fought for the land. Some First Nations wanted peace. In the end the British won, and it became the 13 colonies, some french came, and first nations, they started intermarriage. They also brought Africans, to be slaves for the British and the French (which is really sad), the British stopped sooner I believe, the French stopped later. The Spanish also came to join the new world, then many other cultures came and ye.
