Answer:
He (helium, that is) has 2 protons in its nucleus.
Explanation:
The placement of numbers around an element's symbol can be confusing. Generally, an element symbol written in this format has the atimic mass in the upper left and the element number on the lower left. The upper right is the lement's charge, zero in the is case because there are two electrons and two protons, for a net charge of zero.
Some symbols will include additional information, such as electron configuration. Be aware of a publication's standard for the notation style used.
The hypothesis of this experiment is as follows: IF detergent A is used to wash, THEN the clothes will be cleaner.
HYPOTHESIS:
- Hypothesis is commonly referred to as an educated guess. It is a critical part of the scientific method.
- Hypothesis aims at providing a testable answer to a scientific question or solving a scientific problem. The hypothesis must be testable and can be accepted or not depending on the result of the experiment.
- Hypothesis usually shows how the the independent variable of an experiment affects the dependent variable.
- Hypothesis is written in an IF, THEN...... statement.
- In this experiment to determine the type of detergent that affects the cleanliness of clothes, the hypothesis will read: IF detergent A is used to wash, THEN the clothes will be cleaner.
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Answer: option C - The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell
Explanation:
Meiosis is also known as REDUCTIVE DIVISION, simply because a parent cell with diploid number of chromosome (46) is divided into four daughter cells with haploid number of chromosome (23)
Thus, ONLY option C correctly defines meiosis
Answer:
Impacts on Ocean Life
Coral Reefs.
Oysters, Mussels, Urchins and Starfish.
Zooplankton.
Plants and Algae.
Fish.
Explanation: