61. A measure of acidity or alkalinity of water soluble substances. A pH value is a number from 1 to 14, with 7 as the middle point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
62. The pH scale typically ranges from 1 to 14, with lower numbers representing acids, higher numbers, bases. Neutral liquids like water have a pH of 7.
63. The pH scale ranges from 0 to 14.
64. A major problem with the use of fertilizers occurs when they’re washed off the land by rainwater into rivers and lakes.
Answer:
a) HT
Explanation:
This question shows an animal with two distinct unlinked genes i.e. on different chromosomes. One gene codes for head shape and the other for tail length. The gene for head shape possess alleles H and h, while gene for tail length possess alleles T and t.
According to Mendel's law of independent assortment, the alleles of a gene will separate into gametes independently of the alleles of another gene. This occurs in such a way that each gamete will contain only one allele from a gene.
Based on this principle, an animal with genotype HhTt will undergo meiosis and randomly produce gametes with the following allelic combinations: HT, Ht, hT, and ht. As seen in the gametes, only one allele of a gene occured in a gamete at a time.
Therefore, HT is the genotype possible in a gamete of parent: HhTt.
Answer:
A.
1) litters
2) influence
3) coins
4) Egypt
5) relay
6) Cyrus
7) cheat
8) Zoroaster
9) barter
10) christianity
B. Inspectors
Explanation:
Process of elimination and minimal research
Answer: 500 g
Explanation: if a burning candle is put into a jar, with the covering, the candle will take a faster time to burn out. The heat inside the jar will not be able to escape the jar.
But if it doesn't have a lid, the candle to liquefy slower due to the candle not having a lid.
No, it's a neutral ion if they have the same + and - ions