Answer:
- United States
- Canada
Explanation:
As per the question, the two countries that concluded the construction of 'St. Lawrence Waterway' would be the United States, as well as, Canada. The waterway construction began in the year 1954 and took five long years and it was completed in 1959. The project was a joint venture between the U.S. and Canada which is an arrangement of several channels, waterways, and locks that allows the easy travelling of ships towards the Great Lakes located in Northern America from the Atlantic Ocean. The seaway is elongated for 595 Km beginning from Montreal to Port Colborne.
The outer core is more thinner than the inner core. outer core is also more rocky in material.
There is a close relationship between evaporation( transformation of water into water vapor in presence of heat), condensation (transformation of water vapor into water droplets), condensation nuclei (minute water droplet) and cloud (assemblage of too many water droplets). For the formation of cloud all these mentioned conditions are required.
Explanation:
Evaporation refers to the transformation of water into water vapor by the action of heat, condensation means transformation of water vapor into water droplet in normal temperature, condensation nuclei refers to the water droplets which is base of formation of cloud.
Cloud forms from the assemblage of water droplets. These water droplets are formed in saturated air condition when the air is full of humidity. Relative humidity means the ratio between the water holding capacity of air and the amount of actual water in air at that particular temperature.
Answer:
Continental drifting
Explanation:
Continental drifting talks about the movement of continents . The process was first discovered by Alfred Wegener. Alfred Wegener noticed the great similarities of the Atlantic coastline of Africa and the south America. He noticed the edge of each continents fits like a puzzle. The idea that the continents were once joined together and have split apart was born out of the observation of the similarities of the continents.
The similarities of fossil found in different continents also proved that the continental has been drifting . The similar fossils found in different continents were better explained if the continents were once joined together. Fossils like the Mesosaurus , a fresh water reptile were found in different continents.
The similarities in rock structure also proved the continents have been drifting .
Answer:
As one plate subducts, it sets up convection currents in the upper mantle that 'exert a net trenchward pull'
Explanation:
