Problem: Please answer a question about the following article about Annelid:
Annelids with blood vessels use metanephridia to remove soluble waste products, while those without use protonephridia. Both of these systems use a two-stage filtration process, in which fluid and waste products are first extracted and these are filtered again to re-absorb any re-usable materials while dumping toxic and spent materials as urine. The difference is that protonephridia combine both filtration stages in the same organ, while metanephridia perform only the second filtration and rely on other mechanisms for the first – in annelids special filter cells in the walls of the blood vessels let fluids and other small molecules pass into the coelomic fluid, where it circulates to the metanephridia. In annelids the points at which fluid enters the protonephridia or metanephridia are on the forward side of a septum while the second-stage filter and the nephridiopore (exit opening in the body wall) are in the following segment. As a result, the hindmost segment (before the growth zone and pygidium) has no structure that extracts its wastes, as there is no following segment to filter and discharge them, while the first segment contains an extraction structure that passes wastes to the second, but does not contain the structures that re-filter and discharge urine.
What do annelids without blood vessels do to remove waste?
A: protonephridia
Problem: Please answer a question about the following article about Dialect:
After World War II, due to Ukrainian collaborationism with the Axis powers in an attempt to gain independence, Moscow changed its policy towards repression of the Ukrainian language.
Why did Ukrainians collaborate with the Axis?
A: to gain independence
Problem: Please answer a question about the following article about Baptists:
Baptists, like other Christians, are defined by doctrine—some of it common to all orthodox and evangelical groups and a portion of it distinctive to Baptists. Through the years, different Baptist groups have issued confessions of faith—without considering them to be creeds—to express their particular doctrinal distinctions in comparison to other Christians as well as in comparison to other Baptists. Most Baptists are evangelical in doctrine, but Baptist beliefs can vary due to the congregational governance system that gives autonomy to individual local Baptist churches. Historically, Baptists have played a key role in encouraging religious freedom and separation of church and state.
Baptists have played a key role in what?
A: encouraging religious freedom and separation of church and state.
Problem: Please answer a question about the following article about Sexual orientation:
Scientists do not know the exact cause of sexual orientation, but they believe that it is caused by a complex interplay of genetic, hormonal, and environmental influences. They favor biologically-based theories, which point to genetic factors, the early uterine environment, both, or the inclusion of genetic and social factors. There is no substantive evidence which suggests parenting or early childhood experiences play a role when it comes to sexual orientation. Research over several decades has demonstrated that sexual orientation ranges along a continuum, from exclusive attraction to the opposite sex to exclusive attraction to the same sex.
Do scientists believe that parenting and/or childhood play a role in sexual orientation?
A:
There is no substantive evidence which suggests parenting or early childhood experiences play a role when it comes to sexual orientation