Universe, galaxy, solar system, star, planet, moon
Answer:
Was there meant to be a picture?
Malaria is spread by mosquitoes because females pick up a parasite and when they bite someone to nurture their eggs it spreads
Observation is broken up into three parts. The first is the date. Then you have the activity and last you have a brief description of what is being observed.
<span>Only one sperm normally fuses
with an egg because if more than one sperm fuses, through a process
called polyspermy, development of the zygote usually stops.
</span>
<span>Fertilization of one egg by
two sperm is possible, but the resulting zygote is almost never viable
because such a zygote would have three sets of chromosomes instead of
the normal two. This condition, called triploidy, is usually
incompatible with life. Those rare triploid infants that do survive to
term have severe and multiple birth defects and rarely live more than a
few days. </span>
