From top to bottom, I believe the answers are:
Biologist
Chemist
Geologist
Hydrologist
Around 40 weeks is when it occurs
"From the dog" is the prepositional phrase since it begins with the preposition "from" followed by the noun phrase "the dog" .
Two things that Characterize the practice of science is empirical evidence and community consensus. Hope this helps.
Answer:
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
