Area is expressed in square units, such as square meters. what is the abbreviation for square centimeters?

- volume is expressed in cubic units> what is the abbreviation for cubic meters?

- density is expressed in cubic units. what is the abbreviation for cubic meters?

- for lunch, you might drink how much milk -250 l, 250 ,ml, or 250 kl?

- your friends vegetable garden is one of these sizes: 20 g, 50 km, or 30m2 . what size is it?

- the water in the pool is 3m deep. should a nonswimmer jump in?

- your friend cathy lives 0.024 km from your house. she wants to visit you. would she most likely ride in a car, walk, or take a plane?

- a rock has a mass of 2,000g. could you lift-in?

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.