Answer:
Fewer than 500 lions remain in West Africa, the study estimated. The team and a panel of lion experts used the savannah data to refine estimates of lion populations, which had ranged between 20,000 and 40,000 across Africa. Their estimate: 32,000 lions remain, down from an estimated 100,000 in 1960.
Will give brainliest
How does population density/caring capacity?
Answer:
The more the people in a city, the less capacity there is because there needs to be enough space and resources for everyone.
Explanation:
plant breath through
Answer:
Plants respire through plant pores, called stomata. During respiration and photosynthesis, gases go in and out of the plants through stomata using diffusion, not breathing.
Answer:
respiration
Explanation:
Plants breathe through a process called respiration, where they exchange gases between the outside and the inside of their bodies as a living organism. They breathe through openings called stomata. Photosynthesis makes a plant produce oxygen, but a plant also requires oxygen constantly.
The top two human activities that threaten the habitats of endangered species globally are:
a.) Over-exploitation and agriculture
b.) Urban development and invasion of non-native species
c.) System modification and war
d.) Pollution and climate change
Answer: D
Explanation:
The circled portion of DNA labeled X in the following picture is a
a phosphate group
b sugar
c nucleotide
d aldehyde base
Answer:
a. Phosphate group
Explanation:
The circled portion of the DNA labeled X is ; ( C ) Nucleotide
The Nucleotide in a DNA molecule is the building block of the nucleic acid and it consists of a sugar molecule, A phosphate group ( P ) and nitrogenous base like adenine, cytosine or guanine.
The circled portion covers a nitrogenous base ( cytosine ), a phosphate group and a sugar molecule therefore the circled portion correctly represents a Nucleotide in a DNA molecule.
Hence we can conclude that the circled portion of the DNA is Nucleotide.
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What would happen if RNA polymerase is unable to bind to the DNA molecule?
A. DNA replication will begin
B. Transcription of proteins would begin
C. Transcription would be blocked and no proteins will be made
D. The repressor protein will begin transcription
Answer: Transcription would be blocked
Explanation:
Answer:
C. Transcription would be blocked and no proteins will be made
Explanation:
If RNA polymerase is unable to bind to the DNA molecule, the transcription would be blocked and no proteins will be made.
Explain why two siblings except identical twins have the exactly the same alleles
Answer:
having exactly the same DNA sequences, twins start accumulating genetic variation from the earliest stages of development, researchers at Iceland-based company deCODE genetics found, meaning that one twin harbors variants that aren't present in the other.
A model showing two possible arrangements of chromosomes during meiosis is shown in Figure 1.Figure 1. Two possible arrangements of chromosomes during meiosis
Which of the following questions about genetic diversity could most appropriately be answered by an analysis of the model in Figure 1?
A) Does crossing-over generate more genetic diversity than the fusion of gametes does?
B) Does DNA methylation prevent independent assortment during metaphase II?
C) How does the independent assortment of the two sets of homologous chromosomes increase genetic diversity?
D) Do daughter cells that are not genetically identical to parent cells produce viable zygotes?
C) How does the independent assortment of the two sets of homologous chromosomes increase genetic diversity?
What is independent assortment?Independent assortment is a mechanism that contributes to genetic diversity during meiosis. It refers to the random alignment and separation of homologous chromosomes during the first meiotic division (meiosis I), which leads to different combinations of chromosomes being passed on to the daughter cells.
This means that each daughter cell will have a unique combination of chromosomes. When the gametes (sperm or egg cells) produced by meiosis fuse during fertilization, they can give rise to offspring with a unique combination of genetic information, further increasing genetic diversity within a population.
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Stage 1: What is a property of a gas? PLEASE HELP!!
A Molecules are separated and far apart and move independently from each other
B Molecules slide past one another
C Molecules vibrate in place
Answer:
A.
Explanation:
B. is liquid and C. is for solids. Gas molecules are relatively very far apart when compared to liquids and solids.
An environmental scientists is least likely to be involved with which of the following?
Studying the relationship between soil fungi and prairie plant species in areas
they are being restores.
Helping a farmer determine the best ways to rotate their crops.
Determining the best way to generate clean energy in Maine.
Studying how stars form.
Answer:
Probably determining the best way to generate clean energy in Maine :)
What is the difference between an instinct and a learned behavior?
Answer:
See below.
Explanation:
The major difference between an instinct and a learned behavior is how it was picked up. An instinct is something that you're born knowing (think of being programmed to do certain actions or display specific behaviors.) An example of this would be how homing pigeons are "wired" and remember their home when they migrate. A learned behavior, on the other hand, is something you have to learn as you don't have a certain behavior, skill, etc. This can be a language, how to walk/talk, personality, likes and dislikes, learning how to read, write, or learn information. So right now, learning about this is displaying a learned behavior (being able to process information and read). :)
10) Adaptations are traits an organism may develop over a few months that
increase its chances for survival. *
O True
O False
what is soul erosion
Answer:
erosion is the action of surface processes that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location. Erosion is distinct from weathering which involves no movement.
In Drosophila, the dominant allele Cy (Curly) results in curly wings. The cross Cy/ x Cy/ (where represents the wildtype allele of Cy) results in a ratio of 2 curly : 1 wildtype F1 progeny. The cross between the curly F1 progeny also gives a ratio of 2 curly : 1 wildtype F2 progeny. How can this result best be explained
Answer:
d
Explanation:
Using a Punnet square to represent the given information
The cross between Cy + and Cy + can be computed as:
Cy +
Cy Cy Cy Cy +
+ Cy + ++
From what we see above, it is above that the ratio of Curly to wildtype is in the ratio of 2:1
This illustrates that the genotype Cy Cy is lethal. This is explained when two curly F1 are crossed which resulted in the same ratio.
Hence, the inheritance of Cy/Cy is fatal.
Why would water move faster through one kind of tree compared to another, and what might that tell us about their life cycle and susceptibility to environmental changes?
Answer:
Due to the presence of larger vessels.
Explanation:
Due to the presence of larger vessels of hardwoods in the tree, water move faster in that tree as compared to other type of plants. in smaller plants, small vessels are present which able them to move less amount of water as compared to large trees which have large vessels. It tells us that the tree adopted the environmental changes so that's why to overcome the change, they use more water.
Approximately 75% of the Earth's surface is covered in water. Why is water considered such a precious resource?
Answer:
Water is precious since it is one of the most basic commodities that sustain the life of human beings, animals and plant. Without water, it would be impossible for any form of life to exist in the universe. Close to 75% of the Earth is covered with salt water, while 2% of the surface contains frozen water.
Explanation:
Why is water a precious resource?
It is needed for all living things and must be managed well to ensure we have enough for our needs and to protect our environment. Water is a precious resource. We can't live without it. Clouds formed by this vapor ensure that water falls back down to Earth as rain, sleet, snow or hail.Water resources are sources of water that are useful or potentially useful to humans. It is important because it is needed for life to exist. Many uses of water include agricultural, industrial, household, recreational and environmental activities. Virtually all of these human uses require fresh water.Learn more:
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Which of these are true?
a) there are many types of ecosystems all over the world.
b) there are only a few types of ecosystems all over the world.
Answer:
a is your answer, I hope it helps!
a!!!!!ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
help pls :) i need a unique answer that isn’t plagiarism
I think thats because small animals have small body that can hide in a safe place. Like example if small animals hide go down to the earth, and the meteorite hit the earth, they will safe down to the ground.
Not like larger animals, they can only hide up he surface and when the meteorites came, they died.
Also some small animals such as cockroaches have ability to adapt to changes.
I’ll mark brainiest if your right need ASAP
Answer:
The second one, smooth shape is dominant and wrinkled is recessive
Explanation:
Answer:
The answer would be B
Explanation:
The wrinkly pea is recessive meaning it is less likely to pass on its traits.
A person'a blood type depends on the type of protein market, called an ___, found on the cell membranes of the red blood cells.
Select all of the following genotype that is/are a heterozygous genotype
A( AA
B( Aa
C( aa
D(Zz
E( zz
Answer:
B, D
Explanation:
Which of these statements are true about
leukemia? Select all that apply.
Leukemia is characterized by an abnormal
increase of circulating blasts.
Leukemia causes solid tumors to form on
lympn nodes.
Leukemia is subdivided into different types.
Leukemia has both adult forms and childhood
forms.
Answer:
-Leukemia is characterized by an abnormal increase of circulating blasts.
-Leukemia is subdivided into different types.
-Leukemia has both adult forms and childhood forms.
Explanation:
The statements 'is subdivided into different types', 'has adult and childhood forms' and 'characterized by an abnormal increase of blasts' are true about leukemia.
What is leukemia?Leukemia is a type of cancer present in the blood cells, which is characterized by its uncontrolled growth.
Leukemia must be diagnosed and treated properly in order to avoid metastasis of this cancer tissue.Leukemia has different differentiation degrees (states of development).In conclusion, the statements 'is subdivided into different types', 'has adult and childhood forms' and 'characterized by an abnormal increase of blasts' are true about leukemia.
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Matching evolutionary terms
Complete the sentences with the correct terms.
selection
Environmental conditions often favor one__
over another.
Answer:
phenotype or trait
Explanation: if it is really cold a mouse with thicker fur (phenotype) will do better
Environmental conditions often favor one selection over another.
In the context of evolution, selection refers to the process by which certain traits or characteristics become more or less common in a population over time. This process occurs due to environmental conditions that favor certain individuals with advantageous traits, leading to their increased survival and reproduction.
For example, consider a population of birds living in a forest with two distinct color morphs: light and dark. If the forest becomes darker due to increased tree cover, the dark-colored birds might be better camouflaged and have a higher chance of surviving and reproducing. Over time, the proportion of dark-colored birds in the population would increase, as they have a selective advantage in the new environmental conditions.
Similarly, if the forest becomes lighter, the light-colored birds may become more successful in avoiding predation and finding mates. In this case, the environmental conditions would favor the light-colored birds, leading to an increase in their frequency within the population.
Therefore, the term "selection" refers to the process by which environmental conditions favor certain individuals or traits, resulting in changes in the frequency of those traits within a population over time.
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how much acid is in the world
Answer:
lots
its on cafeteria food at ur school
Explanation:
Could you be more precise?
There are over 100 types of acid.
These are a few for example:
H2SO3Sulfurous Acid
H2SO4Sulfuric Acid
H2SO2Hyposulfurous Acid
H2SO5Persulfuric Acid
H2S2O7Pyrosulfuric Acid
H2S2O5Disulfurous Acid
H2S2O4Dithionous Acid
H2S4O6Tetrathionic Acid
H2S2O2Thiosulfurous AcidH2SHydrosulfuric Acid
H2S2O8Peroxydisulfuric AcidHClO4Perchloric Acid
what is meaning of pneumonoultramicrosopilicovolcaconiouses
Answer:
a lung disease caused by breathing in very small pieces of ash or dust
Explanation:
Identify structures found in fungi. Check all that
apply.
•produce spores
•contain pseudopods
•contain hyphae
•contain a fruiting body.
Answer:
A,C,D
Explanation:
Produce spores, Contain hyphae, Contain a fruiting body
Fungi produces spores containing hyphae and a fruiting body. So, the correct options are A, C and D.
What is Fungi?A fungus is defined as a member of a group of eukaryotic organisms which includes microorganisms such as yeast and mold, as well as the more familiar mushrooms.
Fungi are described as eukaryotic, non-vascular, non-motile and heterotrophic organisms which can be unicellular or filamentous. They reproduce by means of spores which exhibit the phenomenon of alternation of generations. Fungi lack chlorophyll and therefore cannot photosynthesize.
Fungi are classified in four divisions such as the Chytridiomycota (chytrids), Zygomycota (bread molds), Ascomycota (yeasts and sac fungi), and the Basidiomycota (club fungi).
Thus, Fungi produces spores containing hyphae and a fruiting body. So, the correct options are A, C and D.
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Is soap a base or acid and why?
Answer:
Soap is a basic
Explanation:
Soap is a combination of a weak acid (fatty acids) and a strong base (lye), which results in what is known as “alkalai salt,” or a salt that is basic on the pH scale.
Answer:
soap are basic in nature
Explanation:
because they are the mixture of weak acid and strong bases ....
What’s the correct mRNA sequence from the DNA strand: TAC GCC CGA ATC
A. ATG CCG GCU TAG
B. AUG GCC GCU UAG
C. AUG CGG GCU UAG
D. AUG CCG GCT UAG
E. ATG CCG CGT TAG
Answer:
C. AUG CGG GCU UAG
Explanation:
This works the same as a normal DNA strand, A=T, C=G, except for one difference. Thymine is not an mRNA base, instead it is Uracil. Therefore, if there is an A, you would typically replace it with a T, but for mRNA you will replace it with a U. Keep in mind you will still replace the T in the DNA strand with an A in the mRNA strand :)
How do adaptations help an
organism as they struggle for
existence?
Answer:
adaptations are the development of new characteristics that improve the survival and fitness of an organism. these adaptations comes from either mutation or recombination.
those organisms which have adapted can better survive and compete with the other members of population. in case of any disastrous change only those survive which have been adapted all others will die. these adaptation increase their struggle for existence.
Explanation:
What molecule was theorized to give rise to many of the important bio molecules that we see 1 point
are important to life today?
A)protein
B)amonia
C)RNA
D)fats
What type of heredity is shown in the pedigree?
A
sex linked dominant
B
sex linkęd recessive
С
autosomal dominant
D
autosomal recessive
The type of heredity is shown in the pedigree is autosomal recessive. Hence option D is correct.
What is heredity?Heredity is defined as the whole of biological mechanisms via which certain traits are passed down from one generation to the next. The system by which traits, similarities, and differences are passed down from one generation to the next is called heredity. A guiding biological principle, heredity explains why children resemble but differ from their parents.
Autosomal recessive is defined as when one variant is found on both alleles of a particular gene, a genetic condition is present. The disease must be autosomal recessive if any affected founding daughter has two unaffected parents. Both parents must possess the recessive gene in order for the affected person to inherit it from them.
Thus, the type of heredity is shown in the pedigree is autosomal recessive. Hence option D is correct.
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