15points+brainliest to whoever answers right!! please help it’s due tonight :(!

Explanation:

the total mass of all the organisms in a representative area of the ecosystem C. the total mass of all the organisms in the ecosystem D. the number of organisms in each trophic level of the food web. leticiasilvacos is waiting for your help.

Answer:

There is no molecular motion in a solid

Explanation:

There are molecules that move freely in liquids and gases but in a solid they don't move. They are usually stuck

Answer:

The Main Differences are in a aquatic Habitat the animals / organisms live the water.

In a Grassland Habitat the animals / organisms live on / in land.

A City Habitat is often covered with concrete, asphalt, and buildings, which are not man made material.

Examples:    

1. Aquatic Habitat organisms include fish, whales and plankton.

2.Grassland Habitat organisms include bears, lions and wolves.

3.City Habitat organisms include plants, pigeons and people.

Answer:

1-Identify the problem

2-Research the problem

3-Make a hypothesis

4-Test the hypothesis

5-Observe and record

6-Arrive at a conclusion

Answer:

Crude oil is used to make the petroleum products we use to fuel airplanes, cars, and trucks; to heat homes; and to make products such as medicines and plastics. Although petroleum products make life easier, finding, producing, and moving crude oil may have negative effects on the environment More than 12 million people live within 1/2 mile of these facilities, and many are exposed to air and water pollution on a daily basis, which can lead to an array of health issues.       Bonus.....People with asthma are at greater risk from breathing in small particles. The particles can make asthma worse. Both long-term and short-term exposure can cause health problems such as reduced lung function and more asthma attacks

Explanation:

This is what i have hope it helps! :)

Answer:

wear a labcoat, wear safety Goggles, pay attention to what you are doing, do not get caught off guard and have safety gloves on

Answer:

the littoral zone

Explanation:

Answer:

a

Explanation:

bc it none of the other are actually talking about the question

Answer:

5ml

Explanation:

Enzymes are protein molecules that act as biological catalyst in living systems, as they help speeden up the rate of biochemical reactions. However, one unique characteristics possessed by enzymes unlike substrates is that they do not get used in the reaction. Instead, they are released from the substrate-enzyme binding after the reaction and can be recycled.

Hence, in a case whereby 5ml of amylase, an enzyme that breaks down carbohydrates, is added to a vial containing 10 ml of water and 10 ml of sucrose. The amount of amylase expected to be in the vial at the end of the reaction is 5ml because it will not get used up during the reaction. Hence, the volume of enzyme remains constant after reaction.

Answer:

It is the practice of maximizing the efficiency with which buildings and their sites use resources (energy, water, and materials).It is the practice of minimizing building impacts on human health and the environment.Green building is also known as sustainable or high-performance building.

Explanation:

I just took the test and got it right

Hopefully this helps you

pls mark brainlest

Answer:

Plants and animals are living things. They feed, respire, excrete, grow, move, reproduce and are sensitive to their environment. Animals and plants need food for energy but they feed in different ways.

Answer:

He is yellow.

Explanation:

A qualitative observation is based on objective fact and does not contain numerical values.

Answer:

Earth's climate had remained relatively constant.

Explanation:

Answer:

Reflecting telescopes uses 2 hyperbolic mirrors.

Answer:

Cell diversity is having many different cells like skin cells, blood cells, etc...

Explanation:

Answer: True

Explanation:

I took the test :)

Constitutive skin color is the natural, genetically determined color of the epidermis, uninfluenced by ultraviolet (UV) light or hormone exposure. ... In contrast, facultative skin color results from exposure to UV light and other environmental factors.

hope that helps :)

According to the question, Constitutive skin color is the natural, genetically determined color of the epidermis, uninfluenced by ultraviolet (UV) light or hormone exposure.

In contrast, facultative skin color results from exposure to UV light and other environmental factors.

Constitutive skin color is defined as the basal or genetically determined color in the absence of any external factor such as sunlight.

Thus, this is the main reason.

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Answer:

163 fabric needed to make 250 collars.

Explanation:

Given that,

Length = 1.5 m

Width =137 cm

Number of order = 250

Use fabric = 65%

We  need to calculate the actual length need to make a collar

Using given data

[tex]Actual\ length =Length\times use\ fabric[/tex]

Put the value into the formula

[tex]Actual\ length =1.5\times\dfrac{65}{100}[/tex]

[tex]Actual\ length=0.975\ m[/tex]

We need to calculate the total length of fabric

Using formula for total length

[tex]total\ length=Actual\ length\times Number\ of\ collars[/tex]

Put the value into the formula

[tex]total\ length=0.975\times250[/tex]

[tex]total\ length=243.75\ m[/tex]

We need to calculate the number of fabric

Using formula for number of fabric

[tex]Number\ of\ fabric=\dfrac{total length}{length}[/tex]

Put the value into the formula

[tex]Number\ of\ fabric=\dfrac{243.75}{1.5}[/tex]

[tex]Number\ of\ fabric=162.5\approx 163[/tex]

Hence, 163 fabric needed to make 250 collars.

Answer:

375

Explanation:

trust

Answer:

46

Explanation:

Easy...it's 46 chromosomes

Answer:

False

Explanation:

true that it may sound wired it is actually false

Answer:

Acidic 0-6

Neutral 7

Alkaline 8-14

Explanation:

Answer: The answers seem correct.

1. Active transport - the process in which energy is used to move the particles of a substance against a concentration gradient from a region where they are in lower concentration to a region whey are in higher concentration.

2. The answer chosen for #2 makes sense because energy is usually needed when you putting effort into doing an activity that includes some type of force. That means ions are using energy to be moved against the concentration gradient.

3. Volume makes sense for the last question since the cells are using a space (volume) to move material in and out by diffusion. The other options besides volume are unreasonable.

Answer:

An organism that eats another organism is called a  consumer.

Explanation:

In food webs, consumers are characterized by not being able to produce their own nutrients, having to acquire them from the consumption of other living beings.

Consumers are found from the second level of the food web and can be primary consumers, or herbivores, and secondary, tertiary or even quaternary consumers, who are carnivores.

The other options are not correct, due to:

    a. Vertebrate : which has an internal skeleton, of a bony or cartilaginous nature.

    c. Invertebrate: lack of internal skeleton and spine

   d. Embryo: is the product of fertilization, whose development occurs in the uterine cavity or inside an egg.

Answer :

4 chromatids.

Explanation: the world needs answers , I can provide

Tetrad is best described by two sister chromatids, coming together to form a four-part structure.

A tetrad, also known as a bivalent, is a structure that forms during meiosis I in sexually reproducing organisms.

During prophase I of meiosis I, homologous chromosomes pair up and become physically connected along their lengths.

This connection between homologous chromosomes is called synapsis.

As a result of synapsis, a tetrad is formed, which consists of two pairs of sister chromatids, one pair from each homologous chromosome.

The tetrads play a crucial role in the process of genetic recombination or crossing over. During prophase I, while the tetrads are formed, the genetic exchange can occur between the non-sister chromatids of the homologous chromosomes.

Thus, a tetrad is a four-part structure formed by two pairs of sister chromatids that come together during meiosis I.

To know more about Tetrad, click here:

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Answer:

The circulatory system of our body complies with the gas exchange in the pulmonary alveoli, there the oxygen enters and binds to a protein which oxidizes it, this protein is allosteric, and it is called hemoglobin, this hemoglobin travels the human body capturing every need punctual of each organ, some organs will demand more or less oxygen according to the metabolic state of the human system.

Once oxygen is in front of an organ with few partial pressures of oxygen, it is released from the hemoglobin and this protein changes its conformation and then re-oxidizes when passing through the pulmonary alveoli.

It is important to clarify that hemoglobin is found in red blood cells, and these in the blood where they are pumped and distributed by the cardiovascular system.

Sense of taste, smell, touch, hearing and sight.

In the spinal cord, it is related more than anything those touch receptors in charge of executing reflexes against injuries or harmful conditions, such as touch receptors that are in charge of measuring temperature and measuring the limb's withdrawal response to excessive heat or burn .

As for the central nervous system and the cortex, they are responsible for managing the signals sent by sensory neurons, associating them with feelings, memories and experiences, such as taste and smell.

Photosynthesis is a process where energy currency for plants is obtained as a product, it requires ultraviolet light and carbon dioxide as products, where plant chlorophyll intervenes and oxygen is released to generate food autonomy for plants.

On the other hand, the respiratory chain is a process where proteins are oxidized sequentially to allow the gas exchange of those living organisms.

Explanation:

Explanations one and three are related because they both explain breathing methods in plants and animals such as humans, while in question two the human nervous system is related to the perception of the environment through the senses.