the answer of this question you asked is element
I believe the answer is: <span>bones and stones
The utilisation of metal as materials to made tools did not begin until the Neolithic period (approximately 2000 years after the Mesolithic period)
</span><span>So, bones from wild animals and stones are the only material that they know to be strong/hard enough to be made as tools.</span>
The congress passed the Bankruptcy Abuse Prevention and Consumer Protection Act of 2005. President Bush was the president that signed it into he office.
<span>"Have you ever received a speeding ticket? ______ yes ______ no," when followed by a question such as: "when did you receive that ticket?"</span> is called a Contingency or Filter question.
In social research, this types of questions enables the researcher determine whether the respondent is qualified or has enough experience to answer the next or preceding questions.
A photo's color intensity can be modified by changing the brightness and contrast. This type of situations are best known by professional cameramen. The photographer can adjust the brightness and contrast based on the type of picture that the photographer wants to take. The color intensity changes with these factors.