Answer:
A. They require a medium to travel through
Explanation:
The medium can be any substance-solid,liquid,or gas- and the wave's speed depends on the properties of the material of the medium the wave travels through.
Living things take in and export products. And also libing things have a genetic code that is self replicating. But thats makes viruses weird, but there you go.
<span>The answer is Chyme. The stomach gives little gastric juice
until food is present, some stomach cells secrete mucus, which prevents gastric
juice from harming the cells of the stomach lining, the stomach produces its
protein digesting enzyme, pepsin. Chyme is a thick liquid, created in the
stomach from physical and chemical digestion (mixture of gastric juices) of
food. </span>
Organelles that are involved with energy conversion are;
A. Mitochondria and Chloroplasts
