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.
Low wings with red eyes -LR
Vestigial wings brown eyes - Lr
Red-eyed, the vestigial winged male is crossed with brown-eyed, long-winged female. Each parent is homozygous for the dominant alleles
llRR LLrr
gametes LR lr
F1 LlRr with only one genotype and ratio is 1
Long-winged red eyes phenotype its ratio is also 1
Each parent is heterozygote for the dominant alleles
llRr llrr
gametes lR lr Lr lrF1 LlRr llRr Llrr llrr
then the genotype ratio is 1: 1: 1: 1
lr lr
Answer:
The correct answer is - option D. peripheral nervous system.
Explanation:
The painful sensation is carried to brain by the neurons in the peripheral nervous system that follows the pathway which has three main stages. When one stubs one's toe, the painful sensitivity is the first stage that is followed by the second stage in which signals are transmitted to the dorsal horn from the periphery. Dorsal horn is the structure is present in the spinal cord through the PNS.
Thus, the correct answer is - option D.
A.) Genetic drift occurred; the few individuals left behind were the seals that passed on that specific gene pool.
A scientist that studies earthquakes would be called a 'Seismologist'. :)
