The ocean regulates temperatures, keeping them mild year-round, in climate regions

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

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire