<h2>Pericardium </h2>
Explanation:
Pericardium is the fibrous tissue that surrounds the heart and the roots of the great blood vessels
The pericardium's outer coat is called the parietal pericardium which is tough and thickened, loosely cloaks the heart, and is attached to the central part of the diaphragm and the back of the breastbone
Its inner coat is called the visceral pericardium or epicardium which is double, with one layer closely adherent to the heart and the other lining the inner surface of the outer coat
The intervening space between these layers is filled with pericardial fluid
This small amount of fluid acts as a lubricant to allow normal heart movement within the chest
Q. Which one of these characterizes a hydrophilic substance?
A. Substances that are polar in nature (water is polar).
Answer:
Metals
Elements that readily lose electrons are all metals. Metals that normally lose one electron all form +1 ions with electron configurations we call “stable,” or “energetically favorable.” Element that are metal tend to loss electrons and became positively charged Ion called cations.
Explanation:
Your letter answer: C
Answer:
C. both
Explanation:
The particle theory and wave theory are both used today.
The particle theory tells us that light is a particle or photon. The wave theory tells us that light travels in waves.
The scientific method is a list of steps that scientists use all the time. Scientists use the scientific method to answer questions about certain things and ask questions.
Steps of scientific method:
-Question/problem
-Research
-Hypothesis
-Test/experiment
-Analyze results
-Draw conclusions based on evidence
