Answer: True
Explanation:
To calculate the population density, you will divide the population by the size of the area.
Formula=Population Density = Number of People/Land Area.
The number of inhabitants, or the population divided by the area's size, determines the population density. Many creatures' distribution, growth, and migration can all be described using population density.
What is the population density?Population density is the number of individuals of a species in a specific geographic area.
It is computed by dividing the population, or the total number of people in a population, by the total amount of space, in this example, the land area.
Demographic data can be quantified and examined in relation to infrastructure, ecosystems, and human health using population density data.
High population densities are typically found in lowland plains, flat river basins and deltas, and volcanic regions with good soil.
Low population densities are typically seen in mountainous regions with steep slopes and poor soil.
Therefore, it is true to calculate population density is by dividing the total population by the land area.
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Crossing-over results in what observable change in our cells?
a New combinations of alleles
b Gametes that are genetically identical
c Daughter cells that are diploid
Answer:
A
Explanation:
new combinations of alleles from both parents
Crossing-over results in new combinations of alleles in our cells. The correct option is a.
What is crossing over?Crossing over is a process of meiosis in which the chromosomes of similar types line up. One chromosome is from the father and the other is from the mother. The exchange of genetic material across homologous chromosomes is known as crossing-over. It results in new gene combinations on each chromosome.
When cells divide during meiosis, homologous chromosomes are dispersed randomly to daughter cells, while distinct chromosomes segregate independently of one another.
A new combination of alleles results due to crossing over, and it causes variation in offspring.
Therefore, the correct option is a. New combinations of alleles.
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Which of these digestive chemicals
does the stomach use to break down
food?
A. Hydrochloric acid
B. Escherichia coli
C. Staphylococcus aureus
D. Streptococcus pyogenes
Explanation:
digestive chemicals the stomach use to break down food is -
A. Hydrochloric acid
A cross section of rock layers is shown here, including a layer labeled with the letter X and an arrow. Which argument is supported by the presence of the fossilized seashells in the layer labeled 'X'? A) This layer was once a desert region. B) This layer was once beneath the ocean. C) This layer was once beneath a flooded forest. D) This layer was created by a landslide from a mountaintop.
Answer:
I dont know I need this answer too
Explanation:
Answer:
its B-this layer was once beneath the ocean.
Explanation:
Organism A shares 50% of its DNA sequences with organism B, while organisms B and C share 90% of their DNA sequences. What can be concluded from this?
Band C are probably full siblings while organism A is a grandparent of both.
Answer:
Explanation:
"Organisms B and C are more closely related to each other than they are to organism A" is the one among the following choices given in the question that can be concluded from this. The correct option among all the options that are given in the question is the third option or option "c". I hope the answer helped you.
Which factor can decrease the rate of a chemical reaction?
low activation nergy
low temperature
high concentration of enzyme
O high pressure
Answer:
low temperature since there are less molecules with energy greater than activation energy and they posses less energy to collide with each other and change into products.
Explanation:
2. Canary and Goldfinch can mate and produce offspring. Unfortunately,
these offspring do not last more than one generation. What is the most
likely explanation for this phenomenon?
• The canary and the goldfinch are ecological equivalents.
The canary and the goldfinch are the same species.
• The canary and the goldfinch are different species.
• The canary and the goldfinch are undergoing convergent evolution.
Answer:
the Canary and the goldfish are the same species
What are some indicators that the overall climate of earth is getting warmer?.
Answer
fossil fuels and climate change
Explanation
this earth is gonna die anyways
what is the role of nitrogen in the creation of a dead zone
Answer:
help fertilize blooms of algae
Explanation:
if a person is heterozygous for cystic fibrosis is married to someone who actually has the disease. What are the chances that their child will have CF?
Answer:
50%
Explanation:
CF is a recessive trait. That means that an individual must have two copies of the recessive allele in their genotype in order to express the trait. That means that the parent with CF has genotype cc, while the parent who is heterozygous, and does not express the trait, has genotype Cc. Using a Punnett square to demonstrate the cross of these two parents will produce a probability of 50% heterozygous and 50% positive for CF.
Describe a hypothetical example showing how rising sea levels due to global warming might cause extinction.
Answer:
Global warming may cause more icebergs to melt than are created. This would lead to higher sea levels. Sea levels may rise above land masses located at low elevations. As a result, the animals who lived in these areas may find their habitats shrinking and resources depleting, causing their population size to decrease. If there are particular species that were only able to survive in the areas now covered by water, they may very well become extinct.
How does stem cells serve as a repair system in our body
Answer:
They allow embryonic cells to regenerate and repair.
A rabbit’s cells include many carbon-based molecules, such as DNA and proteins. Which statement best explains how a rabbit obtains the carbon that it incorporates into its cells?
Choose one answer
(Choice A)
A
The rabbit eats grass, which contains carbon within its sugar molecules.
(Choice B)
B
The rabbit breathes air, which contains carbon in the form of carbon dioxide.
(Choice C)
C
The rabbit lives in a burrow in the soil, which contains various sources of carbon.
Answer:
A: The rabbit eats grass, which contains carbon within its sugar molecules.
Explanation:
Animals such as rabbits consume food, which is broken down into smaller components through digestsion. As part of the digestive process, nutrients from the food are absorbed into the bloodstream and carried to cells throughout the body. These components incorporated into the cell structures.
The ____ ____ is the part of a fungus that would produce spores for reproduction.
Answer:
sporangium
Explanation:
Honestly I think it's Fungi
Which one of the 5 HIPPO threats do you think has the most impact on penguin populations? Why do you think that? Please help!!!
Answer:
Climate change
Explanation:
Climate change is ruining penguins habitat it melting away due to warming oceans and melting glaciers.
What is the difference between a mass extinction and a regular (background) extinction? (1 point)
O Mass extinction involves many species over a short period of geologic time.
O Mass extinction is ongoing and is a regular process that results from evolution.
Mass extinction can be caused by ecological factors like climate change and loss of habitat.
O
Mass extinction occurs over a long period of time.
Answer:
the correct answer would be A. Mass extinction involves many species over a short period of geologic time.
Explanation:
Hi,please solve the page or at least one question if you don’t want to solve all of them.
Thank you
Answer:
for 1c the answer is lung cancer and COPD (chronic obstructive pulmonary disease)
Explanation:
HELPP!
What do you predict would happen if peppered moths laid fewer eggs and lived for a longer period of time?
Answer:
the moths might go extinict ?? i don't know
Why is active transport necessary
for cells?
A. Diffusion is a very slow process.
B. Molecules can only enter the cell through
ports in the membrane.
C. Sometimes molecules can't get through the
cell membrane on their own.
Answer:
B. Molecules can only enter the cell through ports in the membrane.
Explanation:
PLEASE MARK ME AS BRAINLIEST
Answer:
B. Molecules can only enter the cell through ports in the membrane.
How did the lack of sea urchins change the effect of lionfish on the reef? Explain.
Explanation:
The lack of sea urchins causes the accumulation of algae on the reef leading to the growth of fish populations. The process significantly increased the invasion of lionfish in the reef. As the reef significantly depends on these fishes and the lionfish feeds on these fish species, the lionfish destroy the reef.
differences between arteries, veins and capillaries
Answer:
There are three main types of blood vessels:
1)Artery ---
i) It is a blood vessel having a thick wall.
ii) It carries blood from the heart to different parts of the body.
iii) On regulatory demand of the body it can dilate or constrict.
iv) It doesn't contain any valve.
v) All arteries carry oxygenated blood except the pulmonary artery.
2)Vein ---
i) It is a blood vessel having a thin wall.
ii) It brings blood from different parts to the heart.
iii) It can't dilate or constrict under normal conditions.
iv) It contains valves that allow the blood to flow in one direction towards the heart.
v) All veins carry deoxygenated blood except the pulmonary vein.
3)Capillary ---
i) It is a very narrow blood vessel that has very thin walls.
ii) It forms a network throughout the body in all living cells connecting arteries to veins.
iii) It can dilate or constrict according to the requirement of tissue.
iv) It doesn't have any valve.
v) It contains mixed blood as it connects arteries and veins
What is the main goal of the pacific region coastal program? a. to end fishing along the pacific coast b. restore wetland and forest habitats c. provide jobs d. restore damage caused by soil erosion please select the best answer from the choices provided a b c d
The main goal of the pacific region coastal program is : ( B ) restore wetland and forest habitats
Function of pacific region programThe pacific region coastal program was established in 1999 with the goal of restoring/preserving wetlands and forest habitats. while wetlands are land areas covered by water for major parts of the year. wetlands suport the existence of various organism such as hydrophytes.
Hence we can conclude that The main goal of the pacific region coastal program is to restore wetland and forest habitats.
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Radioactive decay ___?
A) produces water
B) produces a transformation from one element to another
C) two of the answers
D) none of the above
1. Describe where genes are located and the function of genes.
Type your answer here: Genes are located within the Cells
2. Describe how changes (mutations) to genes can result in changes to proteins.
Type your answer here:
Explanation:
1 Genes are contained in chromosomes, which are in the cell nucleus.
2 Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene's instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.
Why do you think the class insecta is the largest group of arthropods and the most abundant group of eukaryotes?
Due to the morphology, characteristics, and diverse functions, the class Insecta is the largest group of arthropods and the most abundant group of eukaryotes.
What do you mean by Arthropods?Arthropods may be defined as a phylum of invertebrate animals that have a segmented body and jointed appendages, exoskeleton, and dorsal anterior brain.
Insects are found on the Earth since a very long time. They possess a protective shell of an exoskeleton, and their small size, and ability to fly allowing them to escape from their predators. They easily migrate from one region to the other where sufficient food is available.
Among eukaryotes, they occupy a large proportion because they have sufficient area to live, food to eat, and options for mating.
Therefore, due to the morphology, characteristics, and diverse functions, the class Insecta is the largest group of arthropods and the most abundant group of eukaryotes.
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What happens when you add food as a selection factor??
Answer:
The addition of food increases the lives of the bunny as food sustains life and brings about nourishment.
How does lack of moisture affect the habitability of a place?
Answer:
No
Explanation:
Mosturizer components have been tested and they is no evidence of this being a problem to humans
Explain how the data support the claim that cysteine is a large polar molecule.
The data supports the claim that cysteine is a large polar molecule because concentration of cysteine is affected by mutant allele.
What is a Polar molecule?This is defined as a molecule which has a slightly positive end and a slightly negative end.
Cysteine is a large polar molecule because concentration of cysteine is affected by mutant allele therefore if complex protein is low, cysteine is not transported back and its concentration in urine is higher.
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What should an
ecologist measure in order to construct a pyramid of biomass for an ecosystem?
•
A. the biomass in
each trophic level of the food web
•
B.
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
Answer:
A
Explanation:
This overcomes the size difference problem because all kinds of organisms at a trophic level are weighed.
Describe whether high blood pressure is because of nature, nurture or both
Answer:
Both
Explanation:
Nature is a unexpected thing but with nurture you can also get it by nurturing your self or someone badly
How does the dissociation curve for fetal hemoglobin compare to that for maternal hemoglobin?.
Answer:
Shifted Left
Explanation:
Fetal Hb dissociation curve is shifted to the L reflecting higher O2 binding affinity of fetal Hb
