Answer: There are many sources of light, but the initial energy for all light sources comes from the sun. Light travels away from its source in straight lines through space as waves of energy. The waves we can detect with our eyes are called visible light. Patterns in the behavior of light are predictable because light moves in waves through space until it comes in contact with an object or material that changes its direction. Light can pass through or bounce off objects. Additionally, different materials can block or absorb light. If an object blocks light, a shadow of the object forms. If the intensity or direction of the light source changes, the appearance of an object’s shadow can change in size, shape, or darkness. Absorbing light energy can cause changes in matter. A common example includes the color of paper or fabric fading as the matter absorbs light over time. Vibrations cause sounds. We can hear when sound waves travel through the air to our ears and cause our eardrums to vibrate. Sound can also travel through other forms of matter, such as liquids and solids.
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Answer:
They are microorganisms that are important in the nitrogen cycle as converters of soil ammonia to nitrates, compounds usable by plants.
Explanation:
The answer to your question is B.
The biggest influence on basal metabolic rate (BMR) is exerted by hormones from the thyroid gland — T3 thyroid hormone.
<h3>What are T3 levels a sign of?</h3>
- A person's thyroid is producing enough T3 hormone when their T3 levels are normal.
- Low levels may be a sign of hypothyroidism, while high levels may be an indication of hyperthyroidism.
- T3 levels, however, can also be influenced by other variables, such as pregnancy and some drugs.
<h3>What takes place when T3 levels are high?</h3>
High total T3 or high free T3 levels in your test findings could indicate hyperthyroidism.
You may have hypothyroidism, a condition in which your body doesn't produce enough thyroid hormone, if your T3 levels are low.
To assist in the diagnosis of thyroid illness, T3 test results are frequently matched with T4 and TSH test findings.
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Age cohort is the group of people born during the same time. Due to their similar time of birth, they pass the course of life together. Therefore, the correct answer to your question is A. Example of the age cohort is the students of particular class, who are of same age group ad have similar expressions and concerns.