Por favor ajuda!???​

Which of the following statements is true? a. there is not enough food produced in the world to feed everyone. b. the biggest cause of hunger and malnutrition is the cost of getting food to people who need it most. c. most countries have enough arable land and resources to feed their own population and export a surplus d. malnourishment is only seen in a few countries with very limited food supplies.

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

Where is the vascular system located