Did a poor hygiene at Chinese markets add anything to equation to trigger critical mutation of COVID-19 in order to transmit the virus from bats/pangolins to humans? If not, would it spread to humans anyway (even if those markets were spotless) since people over there were in frequent contact with such viruses (right before preparing those wild animals as meals), which would give the virus enough time for necessary adjustment/mutation? Please elaborate. Thanks.

Babies with very low or very high weight are less likely to survive .

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary