Biology Influences On Life Quick Helppppp!!!!!!!!!!!!!!!!!!!!!!…

these are the things that i dont know could you please explain them (the are taken from the specification)
im only in year 9.this stuff should be illegal!!
1) Be able to describe the main characteristics of the phylum Chordata as animals with a supporting rod running the length of the body, an example of this being the backbone in vertebrates.
2 )Be able to explain why binomial classification is needed to identify, study and conserve species, and can be used to target conservation efforts
3 )Appreciate the variations within a species to illustrate continuous variation and discontinuous variation
4)Demonstrate an understanding of how speciation occurs as a result of geographic isolation
5) Be able to explain how new evidence from DNA research and the emergence of resistant organisms supports Darwin’s theory
6 )Know the meaning of, and use appropriately, the terms: dominant, recessive, homozygous, heterozygous, phenotype and genotype (what are these rules )
7)Be able to describe the symptoms of the genetic disorders:
a) sickle cell disease
b) cystic fibrosis
8 ) Be able to evaluate the outcomes of pedigree analysis when screening for genetic disorders:
a) sickle cell disease
b) cystic fibrosis
i kind of dont want to bombard you with lots of questions or itll put you off helping me !! he he please help i need more help as well so if are an expert in Edexcel GCSE Science BIOLOGY let me know