Answer:
Your heart has four valves that keep blood flowing in the correct direction. In some cases, one or more of the valves don't open or close properly. This can cause the blood flow through your heart to your body to be disrupted
Explanation:
When a homozygous red-eyed female was crossed with the white-eyed male (w+w+ × wY), the resulting F1 females were w+w and the F1 males were w+ Y. Crossing the F1 males and F1 females would yield these results:
<span>All the F2 females would have red eyes, although some would be homozygous (w+w+ ) and others would be heterozygous (w+w). </span>
<span>Half the F2 males would have red eyes (w+ Y), and half would have white eyes (wY).</span>
Vitamin A; it is a soluble vitamin in fatty bodies, which can not be released in the urine as other vitamins normally do, it is said that we consume large quantities in an inactive form since this is necessary for many human body processes such as vision, formation and maintenance of skin cells, the immune system, growth and even lactation and embryonic development, therefore it is not necessary to be active to consume large amounts of this vitamin.
Answer:
The answer is A
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Answer:
Just like sedimentary rocks, metamorphic rocks can be forced to the Earth's surface too. All this movement can cause rocks that were once underground to be brought up to the Earth's surface. This process is called uplift. Once exposed to the elements the rock on the Earth's surface begins to weather and erode.
