Describe four characteristics used to identify whether something is alive

Why do we need all 5 of Earth's spheres

I am a solid, nonmetal with 53 electrons what am I?

Theoretical approach gives an evolutionary explanation of why the sexual double standard is found around the world.

Which description is the best definition of recombinant dna?

Increased cAMP as a downstream event of epinephrine and norepinephrine stimulation of the left ventricle produce PKA. Which of the following events in the cardiac muscle physiology is influenced by the increase in PKA? A.

What are some current issues that involve both zoology and questions of ethics or public policy

What is it called when lava when it erupts from the surface through volcanoes.

To do this, they needed to acquire a very special internal organelle, called the chloroplast. Where did they acquire this internal organelle? (hint: it's the same place we got our mitochondria)

Which way do people look when they lie?

Type of sugar found in DNA?