Answer:
Option A, The universe started at a central point, is the right answer.
Explanation:
Edwin Powell Hubble was an astronomer from America. He has played a very significant role in setting up the fields of extragalactic astronomy and observational cosmology. He has been credited with the founding of the Big Bang Theory. He made an observation about the Universe and explained that the Universe is continuously expanding. His finding supported that the Universe had a central starting point, almost all galaxies are moving away from us and that galaxies that are far from us move away faster.
Protective systems are methods of protecting workers from cave-ins of material that can fall or roll into an excavation, or from the collapse of nearby structures. As mentioned in earlier chapters, if an excavation is less than 5 feet deep, OSHA does not require a protective systems unless the competent person sees signs of a potential cave-in. (It is important to remember that a wall collapse in a trench four and 1/2 feet deep can still have serious results!) For trenches between 5 feet and 20 feet deep, shoring and sheeting, shielding, sloping and benching are all acceptable protective measures. It is up to the planners of the construction project and the competent person on site to determine which systems will work best. If an excavation is greater than 20 feet deep, a registered professional engineer must design the protective system.
Shoring systems are structures of timber, mechanical, or hydraulic systems that support the sides of an excavation and which are designed to prevent cave-ins.Sheeting is a type of shoring system that keeps the earth in position. It can be driven into the ground or work in conjunction with a shoring system. Driven sheeting is most frequently used for excavations open for long periods of time. Another type of sheeting, in which plates or shoring grade plywood (sometimes called Finland form) is used in conjunction with strutted systems such as hydraulic or timber shoring. These strutted systems are also referred to as active systems. The most frequently used strutted system involves aluminum hydraulic shoreswhich are lightweight, re-usable and installed and removed completely from above
I would think its A. the rest of the options are for people that can stand still and focus.
Explanation:
factionalism
basically everyone was in a treaty so they just worried about just their group or alliance and not about the overall picture
Answer:
huh? I'm confused is this a language?
