Answer: 1500 kg•m/s north
Explanation:
A PE X
B. lungs
C. skin
D. brain
The organ that is not considered a part of the excretory system is the brain and the correct option is option D.
The excretory system primarily consists of organs and structures involved in the elimination of waste products from the body. The kidney, lungs, and skin are all essential components of the excretory system.
The kidney plays a central role in filtering waste products from the blood and producing urine. The lungs are responsible for the elimination of carbon dioxide, a waste product of cellular respiration, through the process of breathing. The skin, through sweat glands, helps eliminate metabolic waste products such as urea and excess salts through perspiration.
On the other hand, the brain is primarily involved in regulating and coordinating various bodily functions, including cognition, movement, and sensory processing. While the brain plays a crucial role in overall body functioning, it is not directly involved in the excretion or elimination of waste products from the body.
Thus, the ideal selection is option D.
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Answer:
D. BRAIN
Explanation:
The human excretory system includes the lungs, the skin, and the urinary system (kidneys, ureters, bladder, and urethra).
The density would be the same for the whole bar as well as one half of the bar. Density is a identity I believe, by this I mean that it stays the same no matter how little or how much of the same substance you have. Since density = mass / volume, half the bar has half of the weight as well as half of the volume of the whole bar, making the density the same.
For example, a block weighs 10 grams and has a volume of 5 ml. the density would be d = 10/5 or, d = 2g/ml
Half of the block weighs 5 grams and has a volume of 2.5 ml. The density is d = 5/2.5, or, d = 2 g/ml.
See, although there are different amounts of the same substance, their density is the same.
Answer:
The reason is that there are radioactive elements that are in the center of the earth.
Explanation:
If the earth were only a rock cooling from the time of its birth. It should have already cooled completely thousands of years ago. However, volcanoes continue to shed hot magma and this is proof that there is a source of heat in the center of the earth. This source of heat is due to the radioactivity of elements such as Uranium and Thorium that were enclosed during the formation of the earth. These elements slowly disintegrate emitting particles that collide with others emanating heat. For example, the half-life of uranium is 4.5 billion years, which means that it decays very slowly.