An attempt to explain observations of the natural world is

a. a scientific theory
b. a pseudoscientific theory
c. a conclusion
d. an analysis

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the

If the gene for the trait is carried on an x or y chromosome it's a "sex-linked" trait.hope my answer has you : )

Inflamed bursa of the big toe's metatarsophalangeal joint. 

Ibelieve its b and d