Lunar maria (plural form of the Latin word mare, which means sea) are
dark surfaces that can be found all over the moon (17% of the Moon is
covered in them) that have been created as a result of volcanic
eruptions. These areas are made up of basalt, and given that they seemed
almost waterlike, the astronomers in the distant past mistook them for
seas, whence their name comes.
When it comes to craters, their origin
is quite similar - volcanic eruptions created them. When lava starts
erupting from a volcano, it has to get out from somewhere - and thus
craters are created. If you are referring to lunar craters, however,
there are many speculations as to how they were created: due to volcanic
eruptions, meteoric impact, or glacier activity.
the process green plant taking food from sun light is called photosynthetis
Answer:
Explanation:
The eukaryotic genes of interest can be expressed in the prokaryotic genome or plasmid vector. The following are the steps used for the purpose of expression of eukaryotic genes in the prokaryotic genome.
1. Amplification of the target gene of interest from the eukaryotic genome by PCR or polymerase chain reaction.
2. The selection of the plasmid and digestion of the plasmid DNA with the restriction enzyme.
3. Ligation of the amplified DNA fragment and the plasmid.
4. Introduction of the ligated plasmid into the prokaryotic host organism.
A Cell wall is what it says. It is a wall. Nothing is allowed to pass through. A Cell membrane on the other hand is like screen door. It has "Pores" that allow materials in and out.
The birds adapted to the changes. Since the large nuts were no longer as abundant because of the large birds, the small birds were left with the smaller nuts. Their larger beaks lost their use since the small nuts did not require such well-structured beaks, so the birds started to develop smaller beaks.
