Volcanic activity
fault lines
mnt. ranges
and siesmagraphs
Answer:
A. Making an observation
Explanation:
Before you can communicate findings, you first need to have findings. And before you can test a hypothesis, you first need to come up with a hypothesis, which can be done by first making an observation.
<span>Each of the protein chains are conjugated to a nonprotein heme group.Hemoglobin is
the protein that's made of the four polypeptide chains. Each of these chains contains a heme group. Red blood cells are primary players in the oxygen hauling, and they wouldn't be able to do their job if it the weren't for a special molecule called the heme.</span>
Answer:
Cells cannot survive on their own. They need energy to stay alive. They need the energy to perform functions such as growth, maintaining balance, repair, reproduction, movement, and defense.
Explanation:
