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insens350 [35]
2 years ago
8

What is meant by the “life cycle” of a parasite? What importance does it have to those who take care of patients with parasitic

diseases?
Biology
1 answer:
Anon25 [30]2 years ago
3 0
The life cycle of a parasite occurs in various forms in all living hosts. The parasites must infect more <span>than one hosts to complete their life cycle. So it is very important to know how many hosts have these parasites taken over, because then they will know how much longer the parasite will survive and how to treat it. </span>
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How do you refer to how the average temperature of the atmosphere has changed over geological time?
Verizon [17]

Answer:

Explanation:

A non-antagonistic environment was essential for the advancement of life as far as we might be concerned. Was there fluid water? Was there outside on which life could grab hold? Earth's livable surface today is positively not quite the same as it was 4.6 Bya when it originally dense out of our Sun's dusty, turning cloud. We have next to no excess proof of Earth's covering during its initial 500 million years — simply a small bunch of strong zircon grains from the Jack Hills combination in western Australia (Maas et al. 1992, Wilde et al. 2001). Notwithstanding their minuscule size, bolted inside every zircon's precious stone grid is a noteworthy record of occasions back 4.4 Bya. Their science, distinguished by particle radiates only a couple microns wide, recommend they shaped as a component of light covering and within the sight of fluid water (Mojzsis et al. 2001, Peck et al. 2001, Wilde et al. 2001).  

On the off chance that fluid water and raised covering existed so right off the bat in Earth's set of experiences, was life present too? There is carbon isotope proof for life on the planet's most seasoned known volcanic-sedimentary rocks (3.7–3.9 Bya) in the Isua rock formation of West Greenland (Rosing 1999). Sedimentary rocks saved in deepwater, underneath the photic (light-infiltrated) zone, contain sloppy, carbon-rich layers with a carbon-isotope signature like natural rich muds of the cutting edge sea. As in the cutting edge sea, these carbon-rich layers might have aggregated as planktonic microscopic organisms at the surface kicked the bucket and settled to the sea depths. Had life developed by 3.7 Bya, however the proof from Greenland indicates that these living things might have been photosynthetic, flourishing in light-filled surface waters.  

Life before 3.9 Bya is more speculative, in light of the fact that more seasoned rocks were wrecked by the late hefty shooting star barrage (LHB) that likewise cratered our Moon. It could be that extremophiles, which we currently comprehend to live at temperatures up to 120°C (Kashefi and Lovley 2003) and profundities in excess of 3 km (Lin et al. 2006), existed before 3.9 Bya and were fit to endure the LHB by colonizing profound natural surroundings (Abramov and Mojzsis 2009). Then again, there is adequate proof that salt marsh environments endure a time of hefty shooting star siege between 3.5–3.2 Bya — impacts 10 to multiple times greater than the Cretaceous-Tertiary (K-T) occasion that produced strong torrents (Byerly et al. 2002). It seems superfluous to accept that life "paused" to advance until after the LHB occasions, nor that extremophiles were the lone structures fit to endure times of substantial effects.  

Regardless of whether life emerged previously or after the LHB, it did as such without the assistance of free oxygen. It is grounded from sedimentary rocks and paleosols that free oxygen didn't amass in the air until after 2.5 Bya (Rasmussen and Buick 1999, Farquhar et al. 2000, Pavlov and Kasting 2002, Holland 2006). Truth be told, the last ascent to present day air levels happened just ~580 million years prior (Mya), permitting complex life to broaden ashore (Des Marais et al. 1992, Knoll 1992, Canfield and Teske 1996, Narbonne and Gehling 2003).

8 0
2 years ago
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