Answer:
Once the embryo sac has developed, pollination has occurred, and the pollen tube has grown into the ovary to make contact with the ovule, fertilization (fusion of egg and sperm) can occur.Typically, the pollen tube reaches the embryo sac via the micropyle (Greek, mikros + pyle = small opening), or opening, in the integuments of the ovule.. There, it discharges its sperm into the embry
Explanation:
The pollen tube enters into the ovule, through the micropyle. Inside the embryo sac, the tip of the pollen tube ruptures and the 2 male gametes are set free near the egg apparatus. Inside the embryo sac, one of the 2 male gametes fuses with the egg nucleus and forms a diploid zygote. This process is called syngamy or true fertilisation.
Tight-fitting respirators must seal to the wearer’s face in order to provide expected protection. This includes disposable respirators (also called “filtering facepieces”). Therefore, fit testing is required in the US by the Occupational Safety and Health Administration (OSHA) before a user wears a mandatory respirator on the job, and must be assessed at least annually. In addition, fit tests should be performed:
Whenever a different size, style, model or make of respirator is used.
When any facial changes occur that could affect fit, such as significant weight fluctuation or dental work.
A good fit means the respirator will seal to your skin. A respirator can only work when air passes through the filter. Air will take the path of least resistance, so if the seal isn’t there, the air will go around rather than through the respirator – and therefore lessen the protection.
Safety glasses, hearing protection, face shields, hard hats and coveralls can all vie with a respirator for real estate on a person’s face, head or body. For instance, if a half face respirator doesn’t fit well (especially if it’s too large), it can overlap with glasses. The more that happens, the more fogging can potentially occur on glasses, and the more likely it is that they’ll interfere with the respirator’s seal.
Son los Teusacá, Torca, Juan Amarillo, Fucha, Tunjuelo, Soacha, Neusa, Río Frío, Bojacá, y Río Subachoque
( esto yo no me lo se de memoria, esto lo leí en un sitio web )
The optic nerve swelling as it enters the eye through the optic disk is known medically as papilledema.
<h3>What results in eye papilledema?</h3>
Increased pressure from the brain and CSF on the optic nerve causes papilledema. The nerve swells as a result of the pressure as it enters the eyeball at the optic disc.
<h3>What causes papilledema most frequently?</h3>
The most frequent causes of papilledema without IIH were cerebral venous sinus thrombosis, intracranial tumor, and intracranial hemorrhage.
<h3>What occurs when a person has papilledema?</h3>
The following list of papilledema symptoms is possible: loss of vision or blurred vision The optic nerve, which regulates your vision, is subjected to physical pressure as a result. Blurred vision or visual loss in one or both eyes are common symptoms of optic nerve compression.
learn more about papilledema here
<u>brainly.com/question/15197155</u>
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