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Ber [7]
3 years ago
8

Why do certain volcanoes develop in the middle of tectonic plates, instead of between them near the boundaries?

Biology
1 answer:
Ostrovityanka [42]3 years ago
8 0
They h e curtain boundaries
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Charlie is a 2 ½-year-old boy with a history of asthma and allergies. he is on several maintenance medications. his parents rush
Doss [256]

Answer:  A diet rich in calcium and vitamin D supplements.

Some examples off calcium rich foods include Cheese; Yogurt; Sardines and Canned Salmon; Beans and Lentils; Almonds; Whey Protein; Some Leafy Green.

3 0
3 years ago
The passing of __________________ is the basis of heredity. 2. our ________________ encode the instructions that define our trai
cluponka [151]
1. The passing of traits from parents to the offsprings (children) is the basis of heredity. Traits are notable features or qualities in a person, such that each individual has a different combination of traits that makes us unique from others. They are inherited from our parents and passed from generation to generation. That is to our children, then our children to their children and so on.

2. Our genes encode the instructions that define our traits. Traits are majorly defined by the instructions encoded in the genes. However, environment may influences the traits and may play an important role in shaping the traits we posses. Often times these traits may be changed by the environmental factors.

3. Each of us has thousands of genes, which are made of DNA molecules and reside in our chromosomes. Genes are functional or fundamental units of heredity. They are made up of DNA molecules, and act as instructions to make proteins, through a process of transcription and translation. Transcription involves formation of a messenger RNA which then undergoes translation in the cytoplasm to make proteins.The protein formed determine the traits of an individual.

4. In addition to our genes, the Environment we live in also helps define our traits. The expression of genes in organisms may be influenced by environmental factors, these includes the external factors where the organism lives or develops, and also the internal factors such as its hormones and metabolism.

5. Human have two complete sets of 23 chromosomes.  A human being has a total of 46 chromosomes (23×2 = 46). This is referred to as a diploid number (2n). Each set is considered to be a one homologous chromosome set. This is the case of of the somatic cells or the body cells which represents a diploid number of chromosomes.

6. When parents conceive a child, each parent contributes one set of chromosomes.This enhances the passing of traits or genes to the child. The egg cell or the ovum from the mother and the sperm cell from the father contain the haploid number (n) or one set of chromosome. During conception the two combines/fuse to form a zygote which is now diploid (2n).

7. Every child receives half of its chromosomes from the mother and another half from the father. During meiosis in the gametes for both mother and father a haploid cell is formed with one set of chromosomes (haploid, n). Therefore, each child contains half number of chromosomes from the mother and the other half from the father making up the diploid number (2n).

8. This transfer takes place at conception, when the father's sperm joins the mother's egg. During conception, fertilization takes place and the sperm cell fuses with the mother cell (ovum) forming a single cell called Zygote. The zygote has the two sets of chromosomes (23 +23 = 46). The cells then divide by mitosis leading to the development of a child.

9. While most cells in our bodies have two sets of chromosomes, or a total of 46 chromosomes, egg and sperm each have 23 chromosomes. The body cells (somatic cells) contain two sets of chromosomes (diploid number, 2n) from mitosis, while the gametes have a single set of chromosomes (haploid, n), from meiosis.
5 0
4 years ago
Classify these substances as acidic, basic, or neutral:
Alex
Acidic substance(s):
Vinegar contain acetic acid 
Tomato Juice contain citric acid

Basic substance(s):
Baking Soda contains Sodium Carbonate

Neutral Substance(s):
In the process of producing sugar, the sugar cane juice is acidic but goes through a process where it's acidity is neutralized and as such the crystalline sugar ends up neutral
5 0
3 years ago
If a DNA strand has a nucleotide base sequence
Nuetrik [128]

Answer:

T-A-A-G-C-G-T-A would be the sequence of it's complementary strand.

Explanation:

This is because there are 4 nucleotide bases which math with only a certain other nucleotide, which are

  • A as in Adenine matches with T as in Thymine.
  • T as in Thymine matches with A as in Adenine.
  • C as in Cytosine matches with G as in Guanine.
  • G as in Guanine matches with C and in Cytosine.

A good way to remember this is, the letters that are only made of nothing but straight lines (A, T), match with each other, and the letters that have curves in them (C, G), watch with each other.

Hope this helps!

8 0
3 years ago
Two lizard populations live on an island one of the populations has over 100,000 individuals on the island
11111nata11111 [884]

Just about every rocky shoreline in the Galapagos Islands is home to the marine iguana.

These lizards are found throughout the islands, and have population concentrations of up to 4,500 individuals per mile.  Their total population on these islands have been estimated to be between 200,000 and 300,000.

7 0
3 years ago
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