PLEASE HELPP (it's due at 11:59, i would like it done now) here are the links to the articles if the ones on the pdf doesn't work
https://www. reuters. com/investigates/special-report/usa -lead-testing/ https://www. epa. gov/environmentaljustice
https://www. tedmed. com/talks/show?id=627338

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

the correct answer to this question is #5

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.