6-C (breaks off)
7-C(they secrete acid that breaks away rocks)
A cold front does count as weather, if you're looking for more info on cold fronts and warm fronts visit the site below.
http://www.weatherquestions.com/What_are_fronts.htm
Ovulation is triggered by peak concentrations of luteinising hormone peptide secreted into the blood, which is option B.
<h3>What is ovulation?</h3>
Ovulation is the release of an ovum from an ovary.
Luteinising hormone is produced by anterior part of the pituitary gland and stimulates ovulation and the development of the corpus luteum in female mammals.
The luteinizing hormone is released in by the pituitary gland of the brain, which triggers the ovulation.
Learn more about ovulation at: brainly.com/question/6748709
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A good model would be a simple plant taking in sunlight, carbon dioxide (CO2), and water (H2O). Then, releasing glucose and oxygen.
