Answer:
the chorion, the allantoids, the amnion and the yolk sac.
Explanation:
The amniotic egg has four layers. All of these layers are enclosed by a shell
The chorion helps for gas exchange. It's the layer that covers the whole embryo
The allantoid is a sac that helps with gas exchange but also is the one that encloses the wastes of the embryo during the development into the egg, one analogy is with the garbage bag, where all the waste is lookup
The amnion is the layer that protects the embryo, is like a jacket that surrounds the embryo
The yolk sac is the one that has the nutrients that are necessary for the embryo throughout all the development. It is like a lunch box for the embryo
Trace elements such as iron, iodine, fluoride, copper, zinc, and molybdenum (and much more) are very important for maintaining health. We only need very small amounts. They are also reffered as microminerals, these elements are part of enzymes, hormones and cells that we need in the body. Without these small amounts of trace elements, our body starts to show symptoms of nutrition deficiency.
hope this helps!
One reason is that they die and new cells are needed to replace them. If you're cells didn't divide you would die with them. After a while, all cells in you're body are replaced and you are physically not the same man you were before because the set of cells is not the same one.
The answer is d which is composed of millions of cells several types working togather
Answer: Option C.
Polar type of temperate climate over land and subtropical seasonable variable climate zone between 40 to 60 degrees latitude, north or south of the equator.
Explanation:
The temperate zone is the area of the Earth that is between the tropical region and the polar region. It is between the Artic circle and tropic of cancer or between the Antartic circle and tropic of Capricorn. The have between 40 to 60 degrees latitude north or south of the equator. They have seasonal changes. The climate is mild ranging from cool to warm and the sun is not overhead. The zone have four annual seasons and they are Autumn, wintery, spring and summer.
Examples of this regions are western Europe and Northern America.
