Aplanet has been observed orbiting a nearby star. this star has a mass of 3.5 solar masses, and the planet is 4.2 au from the star. what is the planet’s orbital period in earth years? round your answer to the nearest whole number earth years

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How many cells are our body made of ? ♡

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.