About 500 million years ago, trilobites such as this were common ______________ that once covered much of Indiana. Violent storms often occurred in the same area and the trilobites were covered quickly by sediment, hidden for hundreds of millions of years.A) along riverbanks
B) in the sandy plains
C) in warm, shallow seas
D) throughout the mountains

Answer:

Priestly observed that adding a plant to the jar caused the candle to stay lit longer.

Priestly himself inferred that plants gave off oxygen during photosynthesis, it provided the oxygen that was needed for the candle to be able to burn.

Answer:

Joseph Priestly observed that a candle alone in a jar did not stay lit for long and eventually went out and that when he added a plant to the jar, it caused the candle to stay lit longer and the plant to stay alive longer. Priestly then inferred that plants give off oxygen during photosynthesis, providing the oxygen needed for the candle to burn and that the burning candle gave off carbon dioxide, which was used by the plant.

Explanation:

im right!  trust me :)

The genotype of the mother is XX while the genotype of the father is XY.

A genotype simply means the collection of genes in an individual. It is also referred to as the alleles that are inherited in a particular gene.

In this case, since red-green color blindness is a recessive trait, this implies that it will not be visible in a heterozygous female. Hence, the dominant allele will therefore mask the recessive allele.

Since the father has only one X chromosome, then if the trait was present in that X chromosome, he must have shown the trait because all the alleles in Y chromosome are recessive. In this case, the son has inherited the trait from the mother.

Red related link on:

brainly.com/question/12396620

Genotype of Mother: XX°

Genotype of Father: XY

Explanation:

• Since the Red-green colour blindness is a recessive trait , it will not be visible in a heterozygous female because dominant allele will mask the recessive allele.
• Father has only one X chromosome, thus if the trait was present in  that X chromosome he must have shown the trait because all the alleles in Y chromosome are recessive.
• Since the son has inherited the trait it is obvious that he had recieved the trait from his mother who must have been the carrier.