How many joules would it take to blow up the earth?

Which notation is used to represent an alpha particle? a. b. c. d.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?