Science focus on how our world and universe function, how things occur, why things happen the way they do, etc.
And the fact of science having many different fields is why we divide science into various studies but most importantly into 3 major fields of study which are natural, formal and social sciences.
Natural - focuses on the understanding of our environment and living organisms.
Formal - focuses on the understanding of the logical part of our world, and of concrete things if thought in a certain way.
Social - focuses on the study on the relations of human beings with each other and with their environment, on human behaviour.
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Happy homework/ study/ exam!
Presented below we have the story of the embryonic development.
Firstly, a sperm cell fertilizes the egg and implantation takes place in the uterus. At this stage the embryo is made only out of one cell called the zygote. after the implantation cells divide. With each division the number of cells duplicate. At the stage of 16 <span>cells </span>a solid structure called morula forms. Up to this point all of the cells have been dividing equally forming a symmetrical structure, but at this point, the cells start to organize into a fluid-filled blastula. The blastula has an opening, called a blastopore. Further divisions of the cells of the blastula result in the formation of The three germ layers: ectoderm, mesoderm, and endoderm.
These three layers will develop into all of the different tissues and structures of the organism. The first functional organ to form is the heart, which forms around the third week of embryonic development. At his point the heart begins to beat with the embryo’s own blood, often a different type than
the mothers'.
Quickly after that, the nervous system starts to develop and portions of the brain forming the right and left cerebral hemispheres appear. The nervous system is then developed further, formin the structures that will form the 5 parts of the brain. In this process, the cerebral hemispheres become the largest parts of the brain. The embryonic development finishes with the forming of all of the organs and tissues of the organism and the birth.
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Recombinant DNA is the answer
Answer;
over a weeks time
Explanation;
For vegetables and protein foods, intakes should be divided among all the subgroups over a weeks time.
The DRI (Dietary Reference Intake) for protein is 0.8 grams of protein per kilogram of body weight, or 0.36 grams per pound. This amounts to 56 grams per day for the average sedentary man and 46 grams per day for the average sedentary woman.
-However, the right amount of protein for any one individual depends on many factors, including their activity level, age, muscle mass, physique goals and current state of health.
