Answer:
flagella and cilia
Explanation:
Flagella (singular = flagellum) are long, hair-like structures that extend from the plasma membrane and are used to move an entire cell, (for example, sperm, Euglena).
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<span>The correct option from the given options is: "Scientist have determined the composition of Earth's core by using radiometric dating to examine meteorites".
</span><span>To date materials the procedure of radiometric dating or
radioactive dating is used, for example, rocks or carbon, in which trace
radioactive impurities were specifically fused when they were framed. The
strategy looks at the abundance of a normally happening radioactive isotope
inside the material to the abundance of its decay items, which shape at a known
consistent rate of decay.</span>
<h3><u>Answer;</u></h3>
Waste
<u>Waste</u> is any unwanted substance or toxin that is expelled from organisms. Example: urea, carbon dioxide.
<h3><u>Explanation;</u></h3>
- <em><u>The body must remove waste products from the all the tissues in the body. These waste products are constantly being produced by the body tissues and must therefore be excreted, because if they are not, they will increase in concentration and may interfere with chemical reactions or damage cells.</u></em>
- <em><u>Waste products include, carbon dioxide and Urea</u></em>. They are excreted through various body system and excretory organs, which includes, kidney that eliminates water, urea and other waste products in the form of urine, lungs which eliminates carbon dioxide from the body, and skin which excretes excess water.
Answer:
The kidneys take of up more Ca2+ and release vitamin D. The bones release Ca2+. The intestines increase reabsorption of Ca2+.
