The 1st one is the answer i hope u have a wonderful day and say smiling :)
The process of sexual reproduction involves two parents, each contributing one gamete. Gametes are produced
by a process called meiosis, which starts by the duplication of the
chromosomes, followed by two rounds of cell divisions and halving of the
chromosome number. Gametes have half the chromosome number of other
adult
cells of an organism.
A key feature of meiosis is the exchange of chromosome pieces which occurs in the first division of this process, called recombination or
crossing over. Recombination is a very important source of genetic
variation between individuals of sexually reproducing species, and the
driving force for the process of natural selection.
Answer:
What kinda creature? Just any creature? explain this please and then I'll answer in the comments.
Water doesn't have a large Ka (acid dissociation constant), hence the equilibrium of
H2O ⇌ H+ + OH-
lies on the far left.
therefore a container of water wouldn't have many H+ and OH- ions floating about.
There WOULD be a very very very small concentration and H+ and OH- in it, since a value of Ka means that it does ionise in itself, but on the whole there would be MORE water molecules floating about. This is why water acts as a very poor buffer.
You need the acid AND the conjugate base (salt) for a buffer to work.