Answer:
1. Circumference : distance around a circle
2. Metric system : decimal measurement system
3. Area : Surface measurement
4. Weight : A force that change with location
5. Diameter : Distance across a circle.
Explanation:
Circumference is the same as a perimeter = what is "outside" or enveloppe
Metric system is an equivalency to the imperial system
Area what is "inside"
Weight differ mostly because of gravity
Diameter cut a circle in 2 equal half
I would say that during periods of glacial advance, ice when it reaches the ocean like in Greenland, can break off and form icebergs in seawater. This can then be a shipping hazard such as occurred for the Titanic around the turn of the 20th century.
Cutting down the trees! (Stop cutting them down)
And human presence disrupting the ecosystem (let the environment be)