SIR Topher TV

Module 9 Science 7 Q2 An ecosystem is defined as any community of living and non-living things that work together. Ecosystems do not have clear boundaries, and it may be difficult...

Module 5 Science 7 Q2 Part 1 The first time the word cell was used to refer to these tiny units of life was in 1665 by a British scientist named Robert Hooke. Hooke was one of the earlie...