Explanation:
1. All of the following are periods of prenatal development except: a.germinal
b.embryonic
c.fetal
<u>d.postpartum</u>
Prenatal development describes the 40 week period before a child’s birth and the processes that occur during that time during prenatal development. Cells containing genetic material called chromosomes determine all physical characteristics of an organism including biological sex, height and eye color through expression of genes.
- The germinal stage describes the process from conception through implantation which is approximately two weeks, and begins when an egg is fertilized by sperm to form a zygote.
- The embryonic stage follows this until week eight of pregnancy; here the zygote divides into multiple cells in layers that determine systems like the nervous system; skeleton and respiratory system. The embryo travels through the fallopian tubes and implants itself in the lining of the uterus where blood vessels form the placenta.
- During the fetal stage spanning from week 9 until birth, differentiation, formation of sex organs internal organs and sensory perception occurs. The fetus also undergoes major brain development to form psychological and psychosocial traits. Immediately following the birth of the fetus is called the postnatal period
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Answer:
D) increased nematodes, decreased animals.
Explanation:
WIth fewer things to eat, animals will likely die out, and with nothing to control the growth of nematodes, their population with grow rapidly and out of control.
Carbon has 4 electrons in its outer shell and can form covalent bonds to build a variety of structures
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Based on the description of this experiment, it can be inferred the process of data collection is flawed (last option).
<h3>What is the focus of this experiment?</h3>
This experiment focuses on understanding energy exchange between colliding objects.
<h3>How effective is the experiment carried out?</h3>
In this experiment conditions such as the materials and the conditions were constant. This makes the experiment effective.
Moreover, considering energy is regulated by laws that have been proven by scientists multiple times before it is expected that under the same conditions the results are similar if not identical.
<h3>What is the limitation?</h3>
It is likely students are not recording the results or data effectively and due to this, the results are different.
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