As people age there one become more porous due to loss of calcium and phosphate and osteoporosis.
<u>Explanation</u>:
Osteoporosis is a condition in which the bones become brittle and easy to break on injury which results due to the loss of calcium from the bones. Many health problems and aging can lead to the disease of osteoporosis like breast cancer, prostrate cancer, depression, rheumatoid arthritis, Sickle Cell disease, Parkinson's disease, thalassemia, and many others.
The decreased density of the bone can be detected with the help of bone density x-ray. In females osteoporosis is common after menopause in which the drop of estrogen hormone levels cause the loss of calcium absorption in the bones.
a. new source of fresh water <span>
Other choices are:
</span>
<span><span>b. less access to medicine </span>
<span>c. a higher birthrate </span>
d. a higher fertility rate
New source of fresh water </span>would most likely increase the carrying capacity for humans in a certain region. Water plays many important roles in the ecological and environmental systems, and also in humans. In cellular activities and organismic activities, water is used primarily.
For example,
Water is produce when glucose and fructose undergo a condensation process. The water is removed by the combination of hydrogen and a hydroxyl together. Glucose and Fructose forms a substance called glycosidic linkage. And hydrogen and hydroxyl is separated from glucose and fructose. When Hydrogen and hydroxyl is combined, they create H2o or water.<span> </span>
Answer:
C.Their reproductive cells have flagella.
E.They live in wet places.
Explanation: Just did the assignment
Answer:
D) do not have a cellular structure.
Explanation:
Viruses are known to be acellular as they do not have cellular structure. they do not have most of the cellular components i.e they dont have
Plasma membrane
ribosomes
although viruses consist of nucleic acids, proteins,lipids and carbohydrates but they dont have the ability to perform and function and divide unless they enter any other living host cell. viruses uses the machinery of the living host cell and without the cells viruses are unable to divide.
