Sumaya is using two different strings of Christmas lights to decorate her house. one string flashes every 10 seconds. the other one string flashes every 15 seconds. when Sumaya turns on the lights they flashes at the same time. work out how long it will be before they flash again at the same time. use the LCM to help you work out your answer​

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.