Answer:
Polar bears and black bears are part of the same family.
Explanation:
Answer: "Hair follicles are divided into three parts : the <em>infundibulum</em>, the <em>isthmus</em> and the <em>bulb</em>."
"Each hair contains protein called Keratin. "
Explanation:
Answer:
It doesnot have a nucleus to increase the surface area
Explanation:
Red blood cells carry oxygen from our lungs to the rest of our bodies .Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.
Three fundamental phases:
- Primary
- Secondary succession
- Climax state
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Answer:
research question: how do different humidity levels affect the heights of different types of trees
independent variable: humidity level
dependent variable: tree height
constants: temperature, light, duration of time
control group: tree left outside in normal conditions
Explanation: