Answer:
the later stages are small and the tool materials are of better quality than the previous stages.
Explanation:
The stone scrapers and the choppers found at the site of Zhoukoudian points out the fact that Peking men devised several tools for various purposes and to accomplish different tasks. The stones and the bones used to make the tools used to be charred by using the fire. This also indicates that the Peking men had discovered the uses of fire and they used fire for various activities.
Answer:
A. The sum of all genetic traits in a population's individuals at a given time
Explanation:
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Answer:
C. Cloning endangered species is only a temporary solution, since a large genetic variability is needed to ensure
that an animal population will survive.
Explanation:
Also if they have identical DNA if will cause birth defects.
Answer: population density
Explanation:
Answer:
Changes can occur to physical properties of a substance, but the chemical compostionof the substance will remain the same
