Feeling the heat when touching a hot piece of metal is an example of

conduction

convection

radiation

solar

Final answer:

Early man desalinated sea water primarily by boiling it off to extract salt, a process with historical evidence such as the Han-era deep drilling for salt brine. Other desalination methods throughout history have included freezing and reverse osmosis.

Explanation:

Early man removed salt from sea water by boiling off the water. This desalination process was essential for producing salt for food preservation and nutrition. Historical evidence, such as the Han-era practices, shows that ancient civilizations used techniques like deep drilling for salt brine and then boiling the water with natural gas to extract salt. This process can be likened to distillation, where the principle involves evaporating the water and then condensing it to leave behind impurities.

Moreover, desalination methods have evolved where various scientific principles have been applied. For instance, sea water can also be purified by freezing, a process where ice forms and leaves the salt and other impurities in the liquid water, or through reverse osmosis, which uses a semi-permeable membrane to separate salt from water.

Enzyme activity is highly dependent on temperature and pH. Optimal temperature for human enzymes is usually around 37 degrees Celsius, and deviations can lead to decreased activity or denaturation. Similarly, each enzyme has an optimal pH range, with performance dropping off outside this range due to structure-altering changes in H+ concentration.

The activity of enzymes is greatly influenced by changes in temperature and pH. At their optimal temperature, usually around 37°C for human enzymes, they perform at their peak. Deviation from this temperature can lead to a decrease in activity. High temperatures may cause denaturation, changing the enzyme's structure and preventing substrate binding. Conversely, low temperatures reduce kinetic energy, slowing down reactions.

pH also plays a crucial role in enzyme function. Each enzyme has an optimal pH range where it performs best. For example, enzymes in the stomach, like pepsin, work effectively at a low pH due to the acidic environment. On the flip side, enzymes like trypsin operate in the basic environment of the small intestine. Should an enzyme's environment fall outside its pH range, the change in H+ concentration can alter the enzyme's structure and reduce its activity or even result in denaturation.

Understanding these conditions is critical because enzymes rely on their 3-dimensional shape to function. The noncovalent interactions, such as ionic bonds and hydrogen bonds, that maintain their shape are sensitive to changes in temperature and pH, which can disrupt these forces and the enzyme's activity.

While Earth Science is centered on Earth and its systems, Physical Science has a broader scope that includes the study of the universe and fundamental principles of matter and energy. Both fields share common methodologies and foundational principles, and they often overlap in areas such as the chemistry of the Earth's atmosphere and oceans or the physics of Earth's magnetic field.

Similarities between Earth Science and Physical Science:

1. Both Earth Science and Physical Science involve the study of natural phenomena and aim to understand the physical world around us.

2. They both use the scientific method to conduct experiments, make observations, and draw conclusions.

3. Both fields rely on principles of physics and chemistry to explain the processes and interactions within their respective areas of study.

Similarities for Earth Science:

1. Earth Science focuses on the study of Earth's physical components, such as its atmosphere, oceans, and landforms.

2. It includes the study of natural disasters like earthquakes, volcanoes, and hurricanes, which are directly related to Earth's systems.

3. Earth Science also encompasses the study of Earth's history, including the fossil record and geological time scales.

Differences for Physical Science:

1. Physical Science is broader in scope, encompassing all aspects of the physical world, not limited to Earth. It includes the study of the universe, matter, and energy.

2. It is divided into two main branches: physics, which deals with the properties and nature of energy and matter, and chemistry, which focuses on the composition, structure, properties, and changes of matter.

3. Physical Science often involves more abstract concepts, such as quantum mechanics or thermodynamics, which are not exclusive to Earth.

Differences for Earth Science:

1. Earth Science is more focused on the practical and applied aspects of science that are directly related to Earth and its immediate surroundings.

2. It includes disciplines such as meteorology, geology, oceanography, and environmental science, which are specific to Earth's systems and phenomena.

3. Earth Science is interdisciplinary, integrating biology and ecology to understand how life interacts with Earth's physical and chemical processes.

The reason why interdisciplinary science is important to society is because of the following reasons; It has incorporate sources of knowledge and it is a way of increasing our knowledge. This science has made people realize and learn more things than they actually know and it made people understand things around them without having to actually think an explanation behind it.

Answer:

c

Explanation:

Answer:

Evolution works independently of natural selection

Organisms best suited for environment survive and reproduce statement accurately describes natural selection

Explanation:

Natural Selection: Organism adapts itself to the particular environment to survive and reproduce.

The theory of Natural selection was popularized by Charles Darwin. He explained that organisms evolved, they can survive when they get adapted better to the environment.

Natural selection is also called the'' survival of the fittest''. The organism which gets adapted to the environment will survive.

The more desirable characteristic will pass from parents to offspring.

Answer:

C Burning Gasoline

Explanation:

All the other answers aren't changing state, but burning gasoline is changing it's state because it was liquid than changed into a gas and fire chemical.

Chlorophyll, the green pigment located in the thylakoid membranes of chloroplasts, is essential for photosynthesis as it absorbs sunlight and converts it into chemical energy used to produce plant sugars.

Chlorophyll is a vital green pigment found within the thylakoid membranes of chloroplasts, the organelle where photosynthesis occurs. It plays an essential role in the process of photosynthesis by absorbing sunlight and converting it into chemical energy. This energy is then used, along with water and carbon dioxide, to produce sugars for the plant, which are essential for its growth and development.

In chloroplasts, chlorophyll molecules are meticulously embedded in the thylakoid membranes, and when they capture light energy from the sun, they energize electrons within the chlorophyll molecule. These high-energy electrons are then used in a series of complex reactions to generate energy-rich compounds like ATP and NADPH, which subsequently fuel the Calvin cycle to synthesize sugars.

The presence of chlorophyll in plants also contributes to their green color, as it reflects green wavelengths of light while absorbing other wavelengths, particularly those in the blue and red spectrums, which are crucial for photosynthesis.

Answer is... Smallpox inoculant, insulin production, polio vaccination, and Vitamin E production.

Be safe!

The answer would be dictionary

I am home school I go to ARVA

Question:

6 more than X is equal to 33

Answer:

x = 27

Answer:

The scientists who postulated the cell theory were:

-Robert Hook: he was the first scientist to use the word cell, he observed cork and he calls cells  the the divisions he saw.

- Leeuwenhoek: he built biconvex lenses and with them he observed microorganisms such as bacteria and protozoa and cells such as sperm and red blood cells.

- Schleiden: he studied embryonic cells and discovered the nucleolus

There are several septum's within the body. The term septum simply just means, a divide between two things. If you are referring to the cardiac septum; which separate the heart into left and right sides. There is a top portion of the septum which is called the atrial septum and the bottom portion of the septum; which is called the ventricular septum. They typically keep the deoxygenated blood and the oxygenated blood separated from each other.

If you're referring to the nasal septum, the nasal septum acts as a pathway stabilizer to make sure that the air we breathe in is not "lost" and gets resistance going into our lungs.

The septum in the heart, including the interatrial and interventricular septa, separates the chambers to ensure efficient circulation. The nasal septum, comprising bone and cartilage, divides the nasal cavity into two parts and supports nasal structure and function.

The septum is a central structure in the anatomy of the heart that serves as a divider between its chambers, ensuring proper circulation of blood throughout the body. Two primary types of septa exist within the heart: the interatrial septum and the interventricular septum. The interatrial septum separates the left and right atria and features the fossa ovalis, which is the remnant of the foramen ovale from fetal development. This foramen ovale provided a pathway for blood to bypass the lungs and flow directly from the right atrium to the left atrium before birth. Shortly after birth, it is sealed by the septum primum. The interventricular septum, which is thicker than the interatrial septum, separates the left and right ventricles and is fundamental in maintaining the division between the high-pressure systemic and lower-pressure pulmonary circulatory circuits.

Aside from the heart, the nasal septum is another significant septal structure in human anatomy. It is a flat, midline structure that divides the nasal cavity into two halves, comprising the perpendicular plate of the ethmoid bone, vomer bone, and septal cartilage. This partition plays a critical role in directing airflow and supporting the structure of the nose.

A force that tends to pull together the matter in stars is : ( A ) Gravity

Gravity is a force which pulls object together / towards each other. gravity is an invisible force therefore it can not be seen or felt. for matters of an object to remain in place the force of gravity pull the matters of the object/compound together as seen in the matter in stars.

Hence we can conclude that A force that tends to pull together the matter in stars is : ( A ) Gravity

Learn more about gravity : https://brainly.com/question/557206

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