A mass of 630g is hung on a spring. using force=mass x gravity, what is the force of the mass, acting on the spring

Ostriches don't use their wings for flight, but they do use them for other functions, such as mating rituals and balance. Many ancestors of ostriches did fly.

A person with sickle cell trait has ___ mutated copies of the hemoglobin gene, a person with sickle cell disease has ___ mutated copies.

Which of these remains unchanged during the compaction of sediments?

1. Why do you think scientists struggle to determine the closest relatives of giant pandas? 2. Based on your knowledge of bears and raccoons, which do you think the giant panda is most closely related to? Why?

Where is the major storage space for our biosphere's nitrogen

Passive transport does not mean that a particle is inactive or not moving. It means the particle can move without requiring what?

What are three types of passive transport that occur in the body

10 Pts! Why can only some people smell ant's. I googled it and I only found that some people can smell ant's, and some people can't and why they smell. This is a legit question.

Suppose a mutation occurs in the cells that give rise to your brain during its development. this results in much more efficient use of oxygen by your brain tissues.

If all the rocks are removed from a desert ecosystem, what would happen to the population of rock dwelling lizards and in turn the animals which eat them?