Answer:
Argon
Explanation:
Argon is actually used to determine the age. It's called potassium-argon dating b/c when volcano erupts the rocks in it contain potassium. The potassium slowly decays and produces argon. Scientists measure how much argon is in a given volcanic rock and do math backwards to figure out how many potassium atoms were needed to produce the given amount of argon. We already know the rate at which potassium decays so then they put two and two together to find the age.
Here's a link with some cool info on it:
https://divediscover.whoi.edu/archives/hottopics/volcano.html
Explanation:
vascular because it has spores
vascular because it has true roots
nonvascular because it has spores
nonvascular because it has true roots
Comparison between mitosis and meiosis is tabled below as per the parameter provided in an attachment:
There are 44 chromosomes in the rabbit's somatic cells.