Its D I’m pretty sure. This is because during World war 1 the soldiers played the game in their downtime which then had it spread around all of Europe.
Answer: D
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I'm not 100% certain because i know that doctors give folic acid to both a and b. However, I'm going to say C because the folic acid is putting a liner on your stomach so that when you do get pregnant there will be protection from certain medications. I hope this is the right answer for you.
Answer: microorganisms that cause disease are referred to as pathogens, they include virus, bacteria, fungi, protozoa
Explanation:
A pathogen is an organism that causes disease.
Virus, example include: Adenovirus, Epstein Barr virus,mega virus, Stars coronary virus, hepatitis B virus,
Bacteria: bacillus anthracis, staphylococcus aureus, Chlamydia, Escherichia coli,compylobacter jejuni
Nondisjunction is defined as the failure of the chromosomes to seperate during cell division. An animal with a haploid number of 6 (diploid number of 12) undergoes meiosis, and at the meiosis II (cells are already haploid from the meiosis I), nondisjunction occurs. The mature ovum will contain 6+1 chromosomes (n+1) because there is an extra chromosome from the nondisjunction. The second polar body will contain 5 chromosomes (normal would be 6) because the second polar body did not receive that extra chromosome due to nondisjunction. In the event of fertilization of the abnormal ovum with a normal sperm, the zygote will be a diploid (12 chromosomes) normally but since the ovum as an extra chromosome from the nondisjunction then the zygote will have an extra chromosome (13 chromosomes). One pair of chromosomes has an extra single chromosome and this is called a trisomy.
