Which of the following is the MOST recent evidence of plate tectonics? volcanic activity and sea-floor spreading at the mid-ocean ridges

similar rock formations found on different continents that are now separated by oceans

the observation that the continents of South America and Africa fit together like in a puzzle

similar fossils found on continents that are now separated by oceans

Why are shark population in decline worldwide?

Short answer/constructed response: respond to the question in 3-5 complete sentences. give details or examples to support your answer. attempt to answer all parts of the question in paragraph form! using the source 1 map, pick two of the 1800's territorial acquisitions you believe were the most important in the development of the united states. provide at least two reasons per territory to explain why you think they were the most important.

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things