Canada may have undeveloped reserves of which type of natural resources in the far north and off the east coast

Which of the following emerging technologies uses the principle of chromosomes to identify suspects

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

Read the article about the fraser river, one of the most important rivers in canada. what is the most important species of fish in this river? why are the numbers of these fish declining?