Answer:
106 years ago he proposed his model of atoms
Explanation:
Taking Rutherford's model as a starting point. In 1913, Bohr postulated the idea that the atom is a small solar system with a small nucleus in the center and a cloud of electrons that revolve around the nucleus.According to him, electrons are located around the nucleus only at certain well-determined distances.
The environmental hazard directly related to nuclear power production is the risk of radioactive contamination and potential nuclear accidents.
Nuclear power production involves the use of nuclear reactors to generate electricity. While nuclear power is a low-carbon energy source, there are unique environmental hazards associated with it. The primary concern is the potential release of radioactive materials into the environment.
Furthermore, the long-term storage and disposal of nuclear waste generated by nuclear power plants are ongoing environmental challenges. Radioactive waste materials remain hazardous for extended periods, requiring proper containment and management to prevent environmental contamination.
It's worth noting that with proper safety measures and regulations, the risks associated with nuclear power can be minimized. However, the potential for environmental hazards related to radioactive contamination and nuclear accidents is an inherent concern in nuclear power production.
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C with three dots on the left side of the C and one on the right of the C
C with one dot on the right side of the C and three dots on the left side of the C
C with one dot on each of the four sides of the C
Which of the following correctly describes a Lewis dot diagram for carbon?
C with two dots on either side of the C
C with three dots on the left side of the C and one on the right of the C
C with one dot on the right side of the C and three dots on the left side of the C
C with one dot on each of the four sides of the C
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Answer:
C with one dot on each of the four sides of the C
Explanation:
I just took the quiz this is correct
b. vagina.
c. fallopian tube.
d. ovary.
Fertilization in humans, which is the union of an egg and a sperm, mostly occurs in the fallopian tube. The egg, after being released from the ovary during ovulation, travels down the fallopian tube where fertilization by a sperm can occur.
The fertilization of the human egg typically occurs in the fallopian tube, which is option c. This process is part of the reproductive cycle where the egg, released from the ovary during ovulation, travels down the fallopian tube. At the same time, sperm, after ejaculation, travels from the vagina through the uterus to meet the egg in the fallopian tube. If a sperm successfully penetrates the egg, fertilization occurs, resulting in a zygote which will eventually travel to the uterus for implantation. Hence, the fertilization site is typically the fallopian tube, not the uterus, vagina, or ovary.
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A. the lac repressor
B. the lac operator
C. the lac promoter
D. the lac locator
The correct answer is A. Lac repressor.
Lac repressor prevents lac gene which are found in the DNA of Escherichia Coli from being expressed for many times.
Lac repressor is termed as DNA which binds proteins. It allows the expression of genes from coding which are made for proteins to be involved in metabolism of lactose which is in bacteria.
When there is no lactose which is available in the cell, then the genes are being repressed. Lactose are being converted to allolactose if they are available.
- increased number of chromosomes in the offspring
- the appearance of new phenotypes in the offspring
- possible harmful mutations from cross-over errors
Answer:
B. increased number of chromosomes in the offspring.
Explanation:
Crossing over may cause chromosomes to lose or gain segments, but the overall number would not change.