<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>
Answer:
Viruses Are Link Between Living and Non-Living
Explanation:
Viruses Are Link Between Living and Non-Living
- Virus are exception of Cell Theory
- Virus need a host to Survive
- A virus is non-living before host and
- A virus is Living after getting the Host
Hence, <u>Virus</u><u>e</u><u>s</u><u> Are Link Between Living and Non-Living</u>
-TheUnknownScientist
Hqpapjshxhdkdjaiqhsjcdjsn
Birds, insects, and many reptiles excrete nitrogenous waste in the form of uric acid, which saves water.
Nitrogenous waste in the body tend to form toxic ammonia, which must be excreted. Mammals such as human excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste in the form of a white paste or power. The production of uric acid involves a complex metabolic pathway that is energetically costly in comparison to processing of other nitrogenous wastes such as urea or ammonia, it has the advantages of reducing water loss and, hence, reducing the need for water.
