Two problems that today's agriculture has caused is soil erosion
and a decrease in biodiversity in the environment. This is especially due to mono-cropping of large tracks of land. Lands
cleared for agriculture almost immediately begin to erode away, usually by wind
or running water. Due to monocropping, the
reduced variety of plants on the
environment causes a consequent deduction in a variety
of animals in the region such as pollinators
due to the availability of only one type
of plant for pollination.
The companies are looking for minerals to make money and keep their business growing
<span>After you ovulate, your egg is fertile for between 24 to 48 hours and a man’s sperm can survive in the female body for 48 hours. There have actually even been documented cases of live sperm surviving in the female reproductive system for eight days after intercourse!One breast is always larger than the other. Most of the time, it goes without notice but it is typical for breast size to be slightly mismatched. Some women can be born with two uteruses or two vaginas and have no idea until they notice abnormal menstruation or excessive bleeding. You are born with all the eggs you will ever have in a lifetime which can be anywhere from thousands to millions however, only about 300 to 400 of these eggs will mature and be released for fertilization. <span>You ovaries take turns each month releasing eggs.</span></span>
Explanation:
Seawater is a complex mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases.
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Answer:
Explanation:
This is the process of muscle contraction and relaxation in the muscle. The type of muscle involved is the skeleton muscle.
The process is initiated in the Central nervous system. Examples are in contraction of biceps and triceps.
It involves myosin head and actin filament coupled with the release of calcium ion from the sarcoplasm reticulum: this ion activates this process in the muscles. With the exposure of the music binding site on the acting filament, myosin is able to bind to acting filament bringing about this process.
a. ATP attaches to myosin head
b. Myosin head is re-energized
c. Myosin head forms cross bridge with actin
d. Power stroke moves thin filament
e. Cross bridges detach from actin
f. Myosin binding sites covered
g. Calcium ions pumped into the sarcoplasmic reticulum
h. Calcium ion concentration decreases below the threshold for binding to troponin.
