<span><span>1.
</span>Knowledge of the researcher. It’s important to
consider the researcher’s capacity and capability in the field which he/she
wants to discover. In sense, it is in his proximity of study in order for
him/her to do such approach </span>
<span><span>
2.
</span>Tool used. Making sure whatever measurement the
investigator is using should be valid and reliable. Avoiding the possible
results to become biased and unstable due to errors which should be avoided.</span>
<span><span>
3.
</span>Sampling method. Obtain the samples which are
appropriate and that would cover the entire participants studied –not a half
but the entirety of what you want to study. Entirety means as much as the
possible sample covers.</span>
<span><span>4.
</span>Population. Knowing the involved participants
and respondents in the study, properly defining and clustering helps the study
avoid bias. </span>
Answer:
A#
x = NO3 ( NITRATE ION )
Y= NH3 ( AZANE )
Z = DICTRIFIC BACTERIA
B#
THE PROCESS OF OBSERVING NITRATE IS CALLED <em>NITROGEN</em><em> </em><em> </em><em>FIXATION</em><em> </em>
C#
NITROGEN FIXING BACTERIAS ARE
prokaryotic microorganisms which are capable for transforming nitrogen gas to fixed nitrogen component
D#
THE COMPONENTS RENTER THE SOIL IN WHICH THEY R BROKEN INTO MICROORGANISMS THAT IS KNOWN AS DECOMPOSERS
Mars and Moon are the locations from which meteorites would come.
Option (c);
<u>EXPLANATION: </u>
- The meteorites found on Earth look like martian crystal rocks.
- These might be first ejected into space during a collision of an asteroidal object with Moon or Mars and then it got into the Earth orbit because of the force produced during the collision.
- There are around seventy meteorites recognised to have come from the planet Mars till up to the present date.
- There are three types of meteorites such as Martian meteorites and a sample of two lunar meteorites.
- To identify the origin of the meteorite, the scientist tries to identify the type of rock followed by analysing the chemical composition and then try to identify its age.
Answer:
means that both the necessary mRNAs must persist and there must be a low level of RNA-degrading enzymes present
Explanation:
Mature red blood cells (also known as erythrocytes) don't contain nuclei. The red blood cells that enter the bloodstream eject their nuclei in order to have more space for transporting hemoglobin, a protein whose main function is to bind molecular oxygen. Erythrocytes have a life span period of three (3) to four (4) months. During this period, the mRNA of the hemoglobin genes must remain intact in order to synthesize hemoglobin proteins (i.e., their subunits). Moreover, in mature red blood cells, the levels of the enzymes involved in the degradation of cytoplasmic mRNA (ribonucleases) must also be low to avoid bulk mRNA degradation.