Answer:
Your answer would be ( A star has 2 star systems )
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<span>The molecules that provoke a specific immune response are called antigens.
</span>This molecule initiates the production of an antibody and causes an immune response. T<span>oxins, chemicals, bacteria, viruses, or other substances that come from outside the body can be part of the antigens.
</span>
<span>False
Asphalt is still considered a fossil fuel, as anything that is a made up of hydrocarbons that is created from ancient biological origin is defined as such. They are not used for any sort of resource extraction due to their preserved status for study, but would still classify under the definition.</span>
Cell membrane - the thin layer of protein and fat that surrounds the cell, but is inside the cell wall. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.
Answer:
1. It was a control variable
2. Type of insulation
3. Temperature
4. Plastic lids <em>or </em>Water <em>or </em>Half Full <em>or </em>Direct Sunlight
