Why are glass cylinders provided over plastic cylinders

Identify the image that doesn’t depict a reproductive strategy. 1st image: a bird feeding their young residing in a nest. 2nd image: a lioness nestled with her young. 3rd image: leaves of a tree during the day time. 4th image: a fish gazing up at what appears to be bubbles or mosquito eggs.

What type of plant is good for a bioassay and where can i buy it? i only have a month.

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian