Cell, DNA, chromosome, gene
In order of decreased size
Answer:
Fertilized human egg becomes a solid ball of cells known as morula which then differentiate into blastocyst to fully grown human baby.
Explanation:
1. As the zygote is formed it starts to divide and multiply while moving toward the uterus to form a blastocyst within five days.
2. The blastocyst attaches to the wall of the uterus by implanting itself to the uterine lining
3. Within the 15 days of conception, placenta and umbilical cord starts developing to bring in nutrients and eliminate waste
4. The embryo differentiates into three layers- a) the endoderm, b) the mesoderm, and c) the ectoderm. These three layer form different parts of the body
5. By end of 4 weeks, embryo develops distinct head, tail and heart
6. By end of 10th week, limbs, eyes, brain regions, and vertebrae form
7. Around week 36 labors begins.
- developed from two separate eggs. Identical twins come from one zygote that splits into two embryos, while fraternal twins come from two separate eggs that are fertilized.
<h2><u>Answer:</u></h2>
Love Canal. In 1978, Love Canal situated close Niagara Falls in upstate New York, was a pleasant small average workers enclave with many houses and a school. It coincidentally sat on 21,000 tons of lethal modern waste that had been covered underground during the 1940s and '50s by a neighborhood company.
The waterway families didn't realize that they were being presented to harmful synthetic substances, nor were they mindful that concoction squanders were being dumped in our streams, soil, and air. Love Canal stirred a network to the disagreeableness and appalling acknowledgment of how lethal squanders influence our lives, and pulverize our condition.
