A galaxy is a group of stars, interstellar gas, dust, etc.
There are different types of galaxies. They are all categorized by their shape:
Spiral: a spiral galaxy has a disc in the centre and curved arms that come out of it.
Irregular: it does not have a specific shape. It is just a mass of things.
Elliptical: an elliptical galaxy looks basically like a disc in the universe.
I hope it helps. I tried to explain it as easy and as simple as possible!
A subspecies is a taxonomy category that ranks below species, usually permanent geographical isolated race. <span />
Answer:
WwGg and wwgg
Explanation:
Here you need to analyze what you want to breed and how you get it.
One of the parents was white so it has at least one of its alleles dominant (W), but the other one should be (w) because some breeding is colored.
And even though, we can't see its color we know it has at least one allele for green (G) because of the offspring, and the other one could be green (G) or yellow (g).
The other parent was yellow so, it's both alleles only can be (ww) and (gg) all recessive.
Now we can draw a Punnet square and discover that the F1 of those parents (WwGg and wwgg) is 50% white and 50% green.
Answer:
The correct option is<u> B.adhesion</u>
Explanation:
A molecule of water is made up of a hydrogen atom and two oxygen atoms. The water is a polar molecule; hydrogen ions carrying a positive charge and oxygen atoms carrying negative charge. The negatively charged oxygen atom of one molecule will attract the positively charged hydrogen atom of another water molecule. Hence, developing the forces of adhesion or hydrogen bonds. This forces of adhesion pull the water upwards when water is lost by leaves through transpiration.
Answer:
C. Paleozoic
Explanation:
Trilobites are a group of extinct marine arthropods. Just like many animals from today, including crustaceans, spiders, and insects, they belonged to the phylum Arthropoda. They lived in the Paleozoic era.
We can make this conclusion based on the fact that the period they existed in (from 521 to 250 million years ago) mostly fits the period described as Paleozoic (from 541 to 252 million years ago). However, we can see that they went extinct in the Mesozoic (250 million years ago is more than 252 million years ago). Compared to the entire time they existed, 2 million years is a relatively small amount of time, which makes Paleozoic the correct option.
