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Trava [24]
3 years ago
7

How does fertilization produce new offspring?

Biology
1 answer:
wel3 years ago
7 0

Answer:

D

Explanation:

Sexual reprduction is when a sperm cell fertilzes an egg cell.

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The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in:
Arturiano [62]
The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in Homo habilis. Even though they are species<span> of genus </span>Homo, they are not similar to people nowadays at all. <span>In </span>palaeoanthropology, these species were the first ones who left Africa and started to move and spread along Eurasia, which is one the main facts and characteristics of Homo habilis.
3 0
3 years ago
Explain the thermal properties of water
Zinaida [17]

Answer:

A glance of earth taken from space will depict it blue. This blue colour is actually water, the major part of the earth is covered with water. We need water for almost everything, for example- drinking, bathing, cooking etc and therefore we should know about the properties of water. 65 % human body is composed of water. Water is essential for the survival of life on earth. Water is distributed unevenly on the earth’s surface. It forms a major solvent and dissolves almost every polar solute. So let us have a look at its properties.

Physical properties of water : Water is a colourless and tasteless liquid. The molecules of water have extensive hydrogen bonds resulting in unusual properties in the condensed form. This also leads to high melting and boiling points. As compared to other liquids, water has a higher specific heat, thermal conductivity, surface tension, dipole moment etc. These properties form the reason for its significance in the biosphere. Water is an excellent solvent and therefore it helps in the transportation of ions and molecules required for metabolism. It has a high latent heat of vaporization which helps in the regulation of body temperature

Chemical properties of water: Amphoteric nature:

Water can act as both acid and base, which means that it is amphoteric in nature.

Example:

Acidic Behaviour: H2O(l)+NH3(aq) ⇌ H3O+(aq)+NH+4(aq)

Basic Behavior: H2O(l)+H2S(aq) ⇌ H3O+(aq)+HS−(aq)

Redox reactions:

Electropositive elements reduce water to hydrogen molecule. Thus water is a great source of hydrogen. Let us see an example in this case:

2H2O(l)+2Na(s)→2NaOH(aq)+H2(g)

During the process of photosynthesis, water is oxidized to O2. As water can be oxidized and reduced, it is very useful in redox reactions.

Hydrolysis reaction

Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.

Explanation:

7 0
2 years ago
Staphylococcus aureus (remember that an organism's scientific name can also be written with the genus name abbreviated—in this c
Nimfa-mama [501]

Answer + Explanation :

Bacteria :

1) Approximately diameter is 1-5 micrometer

2) They are prokaryotic.

3) They have rigid cell wall containing peptidoglycan.

4) Replicate by binary fission

Fungi :

1) Approximately 3-10 micrometers in diameter.

2) They are eukaryotic.

3) Rigid cell wall containing chitin.

4) Replicate by budding or mitosis.

<u>Viruses :</u>

1) Approximately 0.02-0.2 in diameter.

2)  They are eukaryotic.

3) They contain protien capsid and lipoprotien envelope.

4) Donot replicate by binary fission.

<u>Archae :</u>

1) Not typically associated with human disease.

2) Found in extreme environments.

3) Cell wall doesn't contain peptidoglycan.

8 0
2 years ago
How can length of day affect temperature
maw [93]

Answer:

The longer the day, the longer the sun is exposure which can lead to increases in atmospheric temperature.

Explanation:

4 0
3 years ago
Which plays both a role in physical and chemical digestion?
kotykmax [81]

Answer:

Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.The digestive system fuels the cells and the excretory system rids the body of the cells' waste.

Explanation:

6 0
3 years ago
Read 2 more answers
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