Which circumstance can cause negative population growth?
O A. The death rate is higher than the birthrate.
•
B. The emigration rate is lower than the birthrate.
• C. The immigration rate is the same as the birthrate.
D. birthrate is higher than the death rate.
Answer:
A.)
Explanation:
if more people are dying than beimg born, the population will decrease
Select two different types of cells found in the human body. Search the internet for a light
microscope view of your selected cells. For example, you might select human heart
muscle cells and human nerve cells. Other possibilities include, but are not limited to:
Sperm cells
Egg cells
Bone cells
Lung cells
Brain
Please help due today emergency
Answer:
sperm cells which are modified to perform fertilisationCharles Darwin and Alfred Russel Wallace figured out that ____ influences the course of random evolution?
A. Dog breeders
B. Natural selection
Answer:
B. Natural selection
Explanation:
Explaination:
Answer:
B. natural selection
Explanation:
Natural Selection: Charles Darwin & Alfred Russel Wallace. A visit to the Galapagos Islands in 1835 helped Darwin formulate his ideas on natural selection. He found several species of finch adapted to different environmental niches. The finches also differed in beak shape, food source, and how food was captured.
the unaided eye perceive stars of the _______ magnitude
Answer:
sixth
Explanation:
yeah that's the answer but It said to explain so I'm jus telling u
interesting biology project topic
Answer:
Vacina ( eu estou aprendendo sobre isso na minha aula, e acho que seria legal por que é uma coisa muito discutida atualmente)
what are the effects of a change in protein? there is 3
What does the prefix "hetero-" mean?
A. Same
B. Different
Answer:
B. Different
Explanation:
Write mechanism of absorption
Answer: The mechanism for absorption is that a photon transfers all its energy to an electron in the absorbing material. The photon is "lost" from the light beam as it is absorbed in a single event. The electron is excited by the gain in energy to a higher energy state in the electron configuration around the atom. (hope it helps)
Answer: I don't know
Explanation: i am brainless
Which type of RNA is transcribed from DNA to carry a message?
A. rRNA
B. tRNA
C. mRNA
Answer:
C. mRNA
Explanation:
The mRNA type of RNA is transcribed from DNA to carry a message.
The diagram above illustrates the carbon cycle. Which of the Following components of the diagram represent carbon sinks?
A. marine photosynthesis and respiration
B. volcanoes and soil carbon
C. oceans and fossil carbon
D. factories and photosynthesis
Answer:
D) Factories and Photosynthesis
Choose the phase of meiosis in column 2 that best matches each event in column 1. - one haploid set of replicated chromosomes at each spindle pole - genetic recombination events take place - shortest stage - aligning of bivalents in the center of a spindle - one haploid set of unreplicated chromosomes at each spindle pole - aligning of monovalents in the center of a spindle - separation of homologous chromosomes - separation of sister chromatids A. telophase II B. anaphase I C. metaphase I D. prophase II E. anaphase II F. telophase I G. metaphase II H. prophase I
Answer:
H. prophase I → genetic recombination events take place
C. metaphase I → aligning of bivalents in the center of a spindle
B. anaphase I → separation of homologous chromosomes
F. telophase I → one haploid set of replicated chromosomes at each spindle pole
D. prophase II → shortest stage
G. metaphase II → aligning of monovalents in the center of a spindle
E. anaphase II → separation of sister chromatids
A. telophase II → one haploid set of unreplicated chromosomes at each spindle pole
Explanation:
Through the process of Meiosis, a diploid germ cell (2n) divides and originates four daughter cells with a haploid chromosome number (n). Each daughter cell has half of the chromosomes of the original one. Meiosis is completed in two phases. During the first phase, and after replication, occurs the chromosome´s reduction division. During the second phase, the cell suffers a new, not reductive division.
1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and became visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: The pairs of homologous chromosomes randomly align in the equatorial plane. Anaphase I: occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. Telophase I: Each of the homologous pairs chromosomes is already in the corresponding poles, and the nuclear membrane forms again in each pole.2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes became lax again, and cytokinesis occurs.
What will happen to a cell that does not have a cell wall if placed in a
hypotonic solution?
a shrivel
b swell and burst
C no change in size
A cell membrane is a phospholipid bilayer.
Which major benefit does the arrangement of lipids in the membrane provide to a cell?
a. The surfaces of the membrane can interact with water solutions.
b. The surfaces of the membrane are nonpermeable.
c. The bilayer makes the cell strong and rigid.
d. The phospholipids help the cell easily change size.
Answer:
b. The surfaces of the membrane are nonpermeable.
Explanation:
This helps the cell membrane to protect the cell.
Answer:
The surfaces of the membrane can interact with water solutions.
Are new variations random?
Answer:
yes
Explanation:
yes its kind of hard to explain but it is
A water molecule is
Answer:
Water is a chemical compound and polar molecule, which is liquid at standard temperature and pressure. It has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. Water is found almost everywhere on earth and is required by all known life. About 70% of the Earth's surface is covered by water. Water is known to exist, in ice form, on several other bodies in the solar system and beyond, and proof that it exists (or did exist) in liquid form anywhere besides Earth would be strong evidence of extraterrestrial life.
Explanation:
hope it helps maya
How do you think Madison's and Jefferson's views were used to justify secession and the Civil War about 60 years later?
Answer:
dameema
Explanation:
Madison and Jefferson were both strong advocates for states' rights and believed that the federal government should have limited powers.
Who were Madison and Jefferson?Madison and Jefferson were both strong advocates for states' rights and believed that the federal government should have limited powers. Their views were used by pro-slavery advocates in the South to justify secession and the Civil War by claiming that the federal government was encroaching upon states' rights and attempting to restrict the institution of slavery.
These advocates argued that the Constitution was a compact between independent states and that the federal government was created only to perform certain limited functions. They claimed that the federal government had overstepped its bounds and was attempting to impose its will on the South, which violated the principles of states' rights and self-government.
Although Madison and Jefferson did not explicitly support secession or the institution of slavery, their ideas were appropriated and distorted by pro-slavery advocates to advance their own agenda. The use of their views in this context highlights the complex and sometimes conflicting ways in which historical ideas and figures can be interpreted and deployed for political purposes.
Learn more about Civil war, here:
https://brainly.com/question/11874600
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How is grazing food chain different from detritus food chain? Explain with examples.
Which statement is true about climate?
The owner of a white female poodle wants her dog to have white puppies. she takes her dog to a breeder, who tells her he will mate her poodle with a white male. Much to the owner's surprise, her poodle gives birth to a black male instead of a white one. she is suing the breeder, alleging he mated her poodle with a black male instead of a white one, which resulted in six unwanted black puppies. You know that the white hair allele is recessive to the dominant allele for black hair in poodles. would you support the owner's allegation? explain your answer.
Find out what the contractile vacuole in a Paramecium does and why
can someone help me please?
The acceleration of an object is measure by its change in velocity per unit time. The equation for acceleration is: a =v/t. Acceleration is represented by 'a'. Velocity is represented by 'v'. Time is represented by 't'. Rearrange the equation to solve for time.
Answer:
t=v/a
Explanation:
To solve for Time
Since acceleration is change in velocity/time
a=v/t
Cross multiply
a×t=v
at=v
Divide both side by a since we want to find Time
at/a=v/a
t= v/a
A scientist observes that a certain trait is determined by a single gene.
An organism inherited one version of the trait from one parent and
another version from the other parent. Both versions of the trait are
expressed in the phenotype of the offspring. Which pattern of
inheritance best classifies the observed trait?
Answer:
Codominance
Explanation:
Codominance occurs when both alleles participation in the expression of the genotype of an offspring, such as a flower with patches of different colours, each coming from a different allele.
11. When cold temperatures are produced in a chemical reaction, the reaction is
known as
a. exothermic.
b. endothermic.
c. suspension
Answer:
it's known as endothermic reaction
help plsss I have no idea
Answer:
the answer is surface runoff
Answer:
Surface runoff
Explanation:
Nitrate can get into the water directly as the result of runoff of fertilizers containing nitrate.
Which of the following is a synonym for the circulatory system?
A Respiratory systemincorrect answer
B Endocrine systemincorrect answer
C Integumentary systemincorrect answer
D Cardiovascular system
Answer:
D.
Explanation:
The synonym for circulatory system is the cardiovascular system.
12. In the process of reproduction, meiosis contributes to genetic variation within a population by producing cells A that are genetically identical to one parent. B with genetic traits identical to those of both parents. C with a combination of traits from each parent. D that are genetically unlike either parent.
Answer:
C. with a combination of traits from each parent.
Genetically modified organisms include microbes used in biotechnology that possess enzymes promoting antibiotic resistance. This could be a problem given the rise of antibiotic-resistant organisms. However, these engineered microorganisms do not pose a risk to public health. What do you think prevents them from spreading antibiotic resistance to pathogens outside the laboratory
Answer:
What prevents these microorganisms from spreading resistance outside the laboratory is that they are modified to not survive outside the laboratory environment.
Explanation:
Antibiotic resistant microorganisms are very dangerous and unfavorable, as they leave living beings completely completely defenseless to their attacks. However, there are microorganisms that have been modified in the laboratory, as shown in the question above, and do not present any risk to living beings, even if they develop resistance. This is because the modification that these microorganisms received makes them not survive the environmental conditions outside the laboratory, which causes them to die if they leave the laboratory.
what is photo synthesis?
Answer:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.
Explanation:
hope it helps
have a good day
Answer:
what happened to Christinam11's account?
GIVE BRAINLIEST!!! PPS HELPPPO
Answer:
50%
Explanation:
What is the role of transport proteins in
active transport?
A. They move molecules against the gradient.
B. They collect molecules of water to assist in the process.
C. They store the ATP needed to power the process.