Please help ASAP I will give 19 points please help


Don’t answer if you don’t know it, if you answer that is really rude because I need the answer and only 1 more person would be able to answer not 2 people to not answer if you have no answer. I am making it clear again DO NOT ANSWER IF YOU DONT KNOW THE ANSWER

Answer:The answer to your question is Mg loses its valence electrons and acquire a positive charge (Mg⁺²).

Explanation:

Answer:

When it becomes an ion, it donates its valence electrons and becomes positively charged. The positively charged ion would be Mg²⁺ because it loses two electrons. It would have 12 protons and 10 electrons.

Hope that helps.

Answer:

D. Sodium

Explanation:

We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).

Answer:

I need this answer too!!!!!!!!!

Explanation:

Answer:1.polarity

2. Hydrophobic

3. Cohesion

4. Hydrophilic

5. Surface tension

Explanation:

Answer:

The benefits in synthetics are many, they have properties that we can't find in nature, they allow us to make things stronger, lighter, more fuel-efficient, shiner, longer lasting. And at the same time, we do add to the pollution of our world, affect the health of animals and humans, and requires energy to make.

Explanation:

Synthetic materials, also known as man-made or artificial materials, have made significant contributions to human society. Like Improved Performance and Durability, Expanded Range of Applications, etc.

Here are three ways in which synthetic materials benefit us:

Synthetic materials often possess superior properties compared to natural materials, such as increased strength, durability, and resistance to wear and tear.

Expanded Range of Applications: Synthetic materials have opened up new possibilities by offering characteristics that may not be readily available in nature.

Resource Conservation and Environmental Benefits: Synthetic materials can help conserve natural resources by providing alternatives to scarce or unsustainable materials.

Thus, while synthetic materials have numerous benefits, it is essential to consider their environmental impact throughout their lifecycle, including disposal and potential hazards.

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Answer:

C. the motion of ball b will stay the same

The four main components of galaxy are Stars, gas, dust, and other objects

Galaxy is a any type system that contain stars,dust, stars remnants, interstellar gas, dark matter and other objects to form universe.

It is derived from Greek word which means milky ,hence it is termed milky way.

Galaxies have different shapes and variations in which the systems are formed.

Galaxies have different in structure and the king of activities that occur in them. Some are site of formations of vigorous sites and so on.

Therefore,

Answer:

(in the pic above)

Explanation:

P= product

R= reactant

S= subscript

C= coefficient

Y= yields

Answer:

sorry BUT I need points

Explanation:

Answer:

Tap water would be the least adhesive to wax paper.

Oil would be the most adhesive

Explanation:

If you get wax paper and water right now, it will repel the water. Putting wax on anything makes it water repellent. I don't know how but this is just my prediction.  

I feel like oil would be the most adhesive because oil repels water, so does wax paper. So I'd predict oil would hold onto wax paper the most.

Hope this helps!

ALSO PLEASE KEEP IN MIND THIS IS JUST MY PREDICTION

Answer:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

Answer:

Diffusion

Explanation:

Answer: A) circulatory system and immune system

Circulatory system and digestive system are the body systems which will help these cells get the energy they need.

These are parts of the body which are involved in the breakdown of food to form energy and other compounds.

Circulatory system on the other hand ensures the nutrients are transported to other parts of the body which is why option C was chosen.

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Answer:

well i can't see half of the picture. unless im blind.

Explanation:

Answer:

Yes.lithium is stable

Explanation:

Because lithium needs lose the valence electron to become stable

Answer:

It's D.

Explanation:

Have a nice day.

Answer:

True

Explanation:

vacuole can take up more than half of the cell's volume. The vacuole holds large amounts of water or food especially in plants

I hope this helps :)

Answer:

Constant variable.

Answer: Non-renewable energy comes from sources that will run out or will not be replenished in our lifetimes—or even in many, many lifetimes.

Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels. For this reason, the time period that fossil fuels formed (about 360-300 million years ago) is called the Carboniferous Period.

All fossil fuels formed in a similar way. Hundreds of millions of years ago, even before the dinosaurs, Earth had a different landscape. It was covered with wide, shallow seas and swampy forests.

Plants, algae, and plankton grew in these ancient wetlands. They absorbed sunlight and created energy through photosynthesis. When they died, the organisms drifted to the bottom of the sea or lake. There was energy stored in the plants and animals when they died.

Over time, the dead plants were crushed under the seabed. Rocks and other sediment piled on top of them, creating high heat and pressure underground. In this environment, the plant and animal remains eventually turned into fossil fuels (coal, natural gas, and petroleum). Today, there are huge underground pockets (called reservoirs) of these non-renewable sources of energy all over the world.

Advantages and Disadvantages

Fossil fuels are a valuable source of energy. They are relatively inexpensive to extract. They can also be stored, piped, or shipped anywhere in the world.

However, burning fossil fuels is harmful for the environment. When coal and oil are burned, they release particles that can pollute the air, water, and land. Some of these particles are caught and set aside, but many of them are released into the air.

Burning fossil fuels also upsets Earth’s “carbon budget,” which balances the carbon in the ocean, earth, and air. When fossil fuels are combusted (heated), they release carbon dioxide into the atmosphere. Carbon dioxide is a gas that keeps heat in Earth’s atmosphere, a process called the “greenhouse effect.” The greenhouse effect is necessary to life on Earth, but relies on a balanced carbon budget.

The carbon in fossil fuels has been sequestered, or stored, underground for millions of years. By removing this sequestered carbon from the earth and releasing it into the atmosphere, Earth’s carbon budget is out of balance. This contributes to temperatures rising faster than organisms can adapt.

1. polarity

2. hydrophobic

3. cohesion

4. hydrophilic

5. surface tension

cohesion is an attractive force of measure where molecules are stick to each other and it is caused by cohesive force between like molecules.

It is an intrinsic property of a molecule, derived by its shape, structure, and electric charge distribution.

When cohesive molecules are become closer to each other, the electrical attraction between these molecule holds them together.

This forces are responsible for surface tension. For example mercury is a cohesive substance, strongly attracted to each other, bead together, sticks to itself when it flows.

When cohesion and adhesion combinedly work, it will lead to capillary action.

Hence, when water climbs up the interior of a thin glass tube or the stem of a plant, Cohesion holds the water together and adhesion helps the water molecules stick to glass.

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Answer:

Allows for diversity, but is slow and inefficient compared to asexual.

Answer: The force used on your arm when you walk a dog on a leash and it tries to chase something is known as Strong pull.Strong pull is defined a physical force which is usually aggressive orcoercive and it involves the movement in a particular direction due to different factors or reasons. The Dog in the example has a leash on and applies a force in the direction ofthe thing it wants to chase which is a perfect example of a strong pull.

Explanation: please give me a brainlist

Answer:

the squid population could decrease, because the tuna population is increasing and they would eat more squid, so the dolphin population would also decrease because there would be less squid to eat, and because there are less squid the herring population would increase.

In trophic webs, there is an equilibrium between species until a change occurs. The increase in tuna's population causes a decrease in dolphins' and squids' populations, and an increase in herring's one.

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To answer this question, let us first review some theoretical framework.

The trophic web is a relationship process between different organisms, through which occurs transference of energy.

The ones placed at lower levels pass energy to the ones at the higher levels.

Organisms at each level feed on the preceding one and become food for the next one.  

As it is a web, all organisms are equilibrated until a change occurs.

When the change affects any of the involved links, there can be a cascade effect on the web.

A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.

Also, when two or more species are competing for the same source of food, a change in any of the population sizes will affect the other ones.

Now, let us analyze the exposed example.

We know that,

We need to figure out what is the cascade effect caused by the increase in the tuna population.

We know that tuna and dolphins compete for food items -squids-.

An increase in the number of tuna individuals means a higher competition pressure for dolphins.

The more tuna there are, the more squids they eat, and the less food available there is for dolphins.

Since there are not enough squids for dolphins, their population decreases in size.

Dolphins are negatively affected by tuna's increase.

**** Tuna population increases  ⇒  Dolphins population decreases ****

Tuna applies a significant predation pressure on squids, which are their main source of food.

The more tuna there are, the more squids they eat.

Squids probably can not reach sexual maturity or do not get to successfully reproduce, because they are eaten by tuna.

So squids population is negatively affected by the tuna population increase.

**** Tuna population increases  ⇒  Tuna population decreases. ****

Since squids feed on herring, any change in squids' population size affects herrings directly.

When the squids' population decreases in size, the herring population increases. More fishes get to survive and successfully reproduce.

The predation pressure of squids on herring decreases.

The herring population is positively affected by the squids' population decrease.

*** Squids population decreases  ⇒  Herring population increases. ***

Summing up, the cascade effect is as follows,

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