Suppose that in 2014, the hubble space telescope discovers a series of planets with the following characteristics moving around a star resembling our sun: spherical, solid surfaces; mean densities about four times that of h2o; radii about 4000 km; low-density atmospheres. how would these planets be classified in terms of our solar system?

The point where two air masses meet is called a

The largest internal organ in the frog is the

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.