Answer:
850
Explanation:
rate of population increase = birthrate - death rate + immigration - emigration
= 1400 - 600 + 100 - 50 = 850
Answer:
850
Explanation:
Give two regions of the body where the bones act as a protection for vital organs. name the bones and the organs they protect.
Answer:
The skull protects the brain, ribs form a cage that shelters the heart and lungs
Explanation:
The skull protects the brain; the thorax (sternum, ribs and spine) protects the heart, lungs and other viscera (organs within the thorax). The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs. Bones are made up of a framework of a protein called collagen, with a mineral called calcium phosphate that makes the framework hard and strong.
How did Watson and Crick learn about Chargoff's rules?
Answer:
Chargaff explained his findings and research to Watson and Crick at Cambridge.
Explanation:
Watson and Crick met Erwin Chargaff at Cambridge in 1952, where he explained his research and findings to them. His rule of parity, or 1:1 rule, stemmed from his discovery of guanine's equal ratio in pairing with cytosine.
Watson and Crick went in to use Chargaff's findings and the work of the researcher Rosalind Franklin as a basis for their work on DNA's double-helical structure.
which nutrients are the most essential for the survival of plants
Answer:
These six essential nutrients are nitrogen, phosphorus, potassium, magnesium, sulfur and calcium. The cool thing about these key nutrients is that they help create new cells, which then organize into plant tissue. Without these nutrients, growth and survival would not occur.
HELLO I NEED HELP ASAP!!
Which of the following is not a way that the environment can influence traits?
the presence of toxins in the environment
through epigenetic factors
expression of the dominant trait
through variation in temperature
Answer:
The correct answer is - expression of the dominant trait
Explanation:
The ineraction of the genes such as dominant and recessive trait are incorporated in the genes and not influence by the environmental condition. These interaction are by the de noo mutations or due to the error in gene expression.
The environmental conditions like toxins cause alteration or mutation in the gene expressions. Temeprature or epigentic conditions are also the factor the can cause influence to traits.
Which organisms have many cells that are grouped together into tissues?
A. Prokaryotic
B. Multicellular
C. Bacterial
D. Unicellular
Answer:
Multicellular is the answer
Why does the cell need to replicate its DNA during interphase?
Answer:
In Mitosis the cell is diving in two to make 2 exact copies. You need to double the DNA to make sure you have enough DNA for each daughter cell
Explanation:
Compared to healthy dog, did the enzymes from Claire’s stomach break down the protein at a low, normal, or high rate?
Answer:
Norma Rate
Explanation:
A _______________ cannot make its own energy and eats only plants for their energy.
Answer:
A herbivore cannot make its own energy and eats only plants for their energy.
Explanation:
I think this is the answer hope this helps :)
23. The toes are anterior to the ankle : true
or false?
true
false
neither
Answer:
it's true hope it helps
Like most students, Megan really enjoyed doing labs in science class. One day her teacher allowed the class to design their own experiment. Her task was to see if she could blow up a balloon using chemicals. Megan knew that vinegar and baking soda would fizz and produce a gas. However, her teacher didn't give her any vinegar to use, only dilute hydrochloric acid. Megan thought she could use the acid in place of the vinegar.
Based on the reading above, which hypothesis would be supported by the experiment?
The BALLOON BLOW UP SCIENCE EXPERIMENT provided evidence to support this claim.
When baking soda, a basic, and vinegar, an acid, are combined, a chemical reaction occurs that produces carbon dioxide gas. Instead of having a predetermined volume or shape, gases expand quickly to fill their container. Because of the fast particle motion in all directions, gases expand quickly. The carbon dioxide gas starts to fill the balloon as it fills the bottle since it has nowhere else to go. The balloon fills with carbon dioxide gas and expands as a result. The size of the balloon will increase with the amount of gas produced. A material is said to be acidic if it has a bitter taste, reacts with metals and carbonates, and turns blue litmus paper red. A base is a compound that has a bitter taste, is slick to the touch, and causes red litmus paper to turn blue.
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2. In some dogs the allele for barking is dominant to the allele for non barking. How would a breeder get a strain of pure breeding barkers? Assume he has males and females of both types.
Answer:
Explanation:
Dominant traits are traits that are visible in the phenotype of an organism.
If barking is dominant in some allele of the dog and it has both male and female then a cross between the male and female with the dominant allele for barking will give a strain of pure breeder barkers.
A recessive allele cannot breed a pure barker because it does not have the allele for barking.
Hence a cross between two individual that dominos of the allele will breed true type.
PLEASE HELP MARKING PEOPLE AS BRAINLIST ALL DAY
The chromatin/DNA of plants and animals is located in the
A. mitochondria
B. Golgi bodies
C. nucleus
D. chloroplasts
Answer:
C.) Nucleus
Explanation:
Chromatin is the main carrier of genetic information and is non-randomly distributed within the nucleus.
Answer:
C. nucleus
Explanation:
Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus.
What process allows plants, animals, and humans to obtain energy from food?
Answer:
photosthesisyns
A student conducted a comparative investigation to test the hypothesis that different areas of New York City have different levels of air pollution.
Which is a likely benefit of this comparative investigation?
It provides her with a large amount of information about air pollution in New York City.
It provides her with results that are valid for a long time.
It requires that she observe a limited number of variables.
It allows her to learn about the causes and effects of air pollution in major cities.
Particles that are both solid and liquid, as well as some gases that are suspended in the air, are what produce air pollution. These gases and particles can be produced by factories, volcanoes, wildfires, dust, pollen, and vehicle and truck emissions.
The largest causes of air pollution come from industrial sources, power plants that provide electricity, and fossil fuel powered cars. The constant combustion of fossil fuels emits chemicals, emissions, and air pollutants into the atmosphere.
Terrible consequences of air pollution
Heart and respiratory issues. Alarming impacts of air pollution. Children's health issues. Even before you take a breath, air pollution is bad for your health.
Climate change Acidic precipitationEutrophicationWildlife impact Ozone layer destructionLearn more about Air pollution
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Giving BRIANLIEST PLZ HELP AND ANSWER ASAP!
Blake is using a screw to hang a picture in his room. Which of the these is the best description of a screw?
A screw allows you to use less force because a screw acts like a pulley.
A screw allows you to use less force because a screw acts like an inclined plane.
A screw allows you to do less work because a screw acts like a lever.
A screw allows you to do less work because a screw acts like an inclined plane.
A screw allows you to use less force because a screw acts like an inclined plane is the best description of a screw.
What are the functions of screw?A screw is a similar types of fastener typically made of metal and characterized by a helical ridge, called a male thread. Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread in a matching part.
Typically, screws and bolts are made from steel due to its strength and relatively inexpensive cost. However, screws and fasteners can also be produced from stainless steel, brass, titanium.
To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.
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Question 47
2 pts
If our body could not do any anabolic chemical reactions for a short time
then during that time our body would not be able to...
o Maintain a constant temperature around 98 degrees fahrenheit
O Burn sugar and fat
O Move
O Make new cells
Question 48
2 pts
please help whoever answers gets brainiest Which organ is found in the excretory system?
A small intestine
B.stomach
C. urethra
D. large intestine
What did Mendel observed when he
crossed a green and a yellow pea?
All the offspring came out green
All the offspring came out as a mix of green
and yellow
There was more green peas than yellow
All the offspring came out yellow
Answer:
Green was dominant over yellow. So they were all green if you are talking about the first generation. The second generation would be a mix
Explanation:
Which of the following is true for gravitational force
Answer:
B increases with increase in mass
Explanation:
How does biology
diversity is increased
by process of Spocation?
Answer: In eukaryotic species—that is, those whose cells possess a clearly defined nucleus—two important processes occur during speciation: the splitting up of one gene pool into two or more separated gene pools (genetic separation) and the diversification of an array of observable physical characteristics (phenotypic ...
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What do you mean by symptom ?
Any subjective evidence of disease. In contrast, a sign is objective. Blood coming out a nostril is a sign; it is apparent to the patient, physician, and others. Anxiety, low back pain, and fatigue are all symptoms; only the patient can perceive them.
what parts of the cell do animal cells and plant cells have in common?
Answer: Nucleus, cytoplasm, mitochondria and a cell membrane
Explanation: All plants and animals share these 4 functions. Plants have 3 extra components: vacuole, chloroplast and cell wall.
Please Answer I will rate Brainliest
Answer:
C proline tyrosine glutamic acid
Explanation:
What is muscle memory? What does new research say about muscle memory?
Match each type of stress with its description.
stress caused by rocks pulling apart
compression
stress caused by rocks being pushed in
opposite directions
tension
stress caused by rocks pushing together
shearing
Correct!
Answer:Shearing: stress caused by rocks being pushed in opposite direction
Tension: street caused by rocks pulling apart
Compression: stress caused by rocks pushing together
Explanation:
Matching the description with each type of stress associated with rocks, we have:
1. Tension: street caused by rocks pulling apart.
2. Shearing: stress caused by rocks being pushed in opposite direction.
3. Compression: stress caused by rocks pushing together.
A rock can be defined as a solid naturally occurring landform that is made up of minerals.
In Geology, stress can be defined as a force that acts on a rock per unit area.
Generally, there are four (4) main types of of stress associated with rocks and these include:
1. Tension: it is a stress typically caused by rocks pulling apart, which makes them to either increase in length or break apart.
2. Shearing: it is a stress typically caused by rocks being pushed in opposite direction due to the effect of parallel forces.
3. Compression: this is a stress that is caused by rocks pushing together, which makes them to either fold or fracture (break).
4. Confining stress: it is a stress typically caused by rocks being pushed down by the weight of any material above it.
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PLS HELP ASAPBlack hair is dominant over white hair in rabbits. If a heterozygous, black haired male
is crossed with a white haired female, what is the probability that their offspring will
have white hair?
100%
75%
50%
0%
Answer:
it's either 50% or 75 but its most likey 50%
Explanation:
trusting my gut
GIVEING ALL MY POINTS!!!
Help Me Please Its 8th grade science
Which statement best illustrates how an organism maintains homeostasis?
(A) Desert plants close the pores on their leaves during the day to reduce water loss.
(B) A newly hatched chick doesn't grow mature feathers until 5 weeks of age.
(C) Male lions leave their pride at 2-3 years old and try to take over another pride.
(D) Domestic dogs have been bred for a wide variety of coat types and colors.
The statement that best illustrates how an organism maintains homeostasis is as follows: desert plants close the pores on their leaves during the day to reduce water loss (option A).
What is homeostasis?Homeostasis is the ability of a system or living organism to adjust its internal environment to maintain a state of dynamic constancy; such as the ability of warm-blooded animals to maintain a stable temperature.
Homeostasis is a very important process in ensuring the survival of an organism. It is the way that living organisms regulate their internal environment despite the changing external environment.
Therefore, the statement that best illustrates how an organism maintains homeostasis is as follows: desert plants close the pores on their leaves during the day to reduce water loss.
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In the energy pyramid, the snake is classified as a
A)
consumer
B)
decomposer
herbivore.
D)
producer.
In the energy pyramid, the snake is a consumer. Therefore, the correct statement is option A.
What is a food chain?A food chain is a series of organisms in an ecosystem where the energy flows from one organism to another organism and each organism serves as food to another organism. For example, plant is consumed by herbivore. The herbivore is then consumed by a secondary consumer, which is in turn consumed by a tertiary consumer.
In an energy pyramid provided, the snake is classified as a consumer. Consumers are organisms that consumes other organisms to obtain energy. Snakes are carnivorous animals that consume other animals, such as rodents, birds, etc. Therefore, they are consumers in the energy pyramid.
Decomposers are organisms that feed on dead organic matter, while herbivores are animals that consume only plants, and producers make their own food.
Therefore, snake is a consumer in the energy pyramid.
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