Answer:
independence, marriage, parenting, launching, aging
Explanation:
The cycle begins with <em>independence</em> when an adult leaves his parents and becomes an unattached individual, then comes<em> marriage</em>, when an individual connects with another person and they commit forming a marital system, then comes <em>parenting</em> when they have children and focus on bearing them until <em>launching</em> stage comes, meaning their offspring becomes unattached adults and finally comes <em>aging</em> were the marriage can focus on themselves and their future years to come.
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<span>Damming a river has a variety of effects on the freshwater ecosystem, more than just altering the flow from A to B. Dams create calm bodies of water, changing overall temperature regimes and sediment transport, leading to conditions which tend to favour generalist species. Loss of specialist species, particularly endemics, changes the community structure and leads to biotic homogenization. A dam will withhold sediment in the reservoir, not just decreasing the amount of substrate available to local freshwater species, but even impacting diadromous, estuarine and marine species much further downstream. The competition between resident species for food and breeding sites will increase as damming isolates populations, and perhaps more importantly, damming completely restricts migratory fish species. Isolation may lead to decreases in genetic diversity and therefore puts species at greater risk from disease. All of these effects may be exacerbated by changes in the surrounding land use. Overall, damming river flow will lead to both a loss of native species, but also an increase in exotic species which are more likely to become established in degraded habitats. For this reason, dams are one of the greatest global threats to freshwater biodiversity.</span>
Answer:
D) the presence or absence of a Nucleus
Explanation:
A Nucleus is present in a Eukaryotic cell. A Nucleotide is present in a Procaryotic cell. If there is a nucleus present, it is a Eukaryotic cell
The new Hazard Communication Standards provide teachers and students the right to manipulate chemical hazards.
Chemical hazards are non-biological substances that can cause damage to health. These are used in different enterprises, companies, school, universities and laboratories for different purposes such as cleaning, disinfection, scientific experiments, among others. When handling them, <u>employees are exposed to them and are vulnerable to harm from these chemicals</u>.
There are many types of hazardous chemicals to be wary of, such as:
- Carcinogens
- Neurotoxins
- Acids
- Systemic toxins
- Asmogens
- Silica dust
- Lead
In the workplace, exposure to these substances represents a real occupational hazard and there must be regulations to ensure that they are safe to handle.
The Occupational Safety and Health Administration (OSHA) is the agency of the U.S. Department of Labor which determined the Hazard Communication Standards. <u>This is a document with the necessary information to study the hazards of the chemical substances used by different employees in the companies</u>, so that they are aware of the dangers of these substances. These employees have the right to know exactly what compounds they handle and the risks involved in their use as well as the precautions and care to be taken.
Therefore, by having these safety standards in place in schools and universities, teachers and students have the possibility and the right to handle chemical hazards safely to be able to conduct the class normally and learn what is necessary.
Learn more about chemical hazards here: brainly.com/question/13113515
As discussed in Lesson 1, density is an excellent indicator of wood strength; the higher the density the stronger the wood. However, a wood with a density of 600 may not be twice as strong as one with a density of 300.
The properties are good at all sizes of material wherever it is homogeneous
What size affects is the likelihood there are flaws in that piece of material. Smaller objects have less likelihood of flaws and come out stronger than big pieces. Big stuff with flaws breaks into smaller stuff missing those flaws so the smaller stuff is less likely to break. Example Aircraft cable is stronger than a solid rod of the same material.