Answer:
Date and latitude interact to determine photoperiod, the daily period of daylight. This interaction has important implications for latitudinal migrants for whom daylight may be a resource or for whom photoperiod regulates annual transitions in life‐history stages (i.e. birds).
Using an established formula, we developed user‐interactive, animated models that enable the visualization of how latitude and date determine photoperiod for latitudinal migrants. We also calculated the photoperiodic schedules for a broad range of hypothetical migratory programmes and real migratory programmes newly available through the proliferation of citizen‐science data. This enabled us to infer the limitations some migratory programmes place on mechanisms for photoperiodic regulation of annual breeding.
In the vast majority of cases, the act of migrating elevates annual daylight exposure. This raises the hypothesis that daylight availability selects for latitudinal migration, potentially contributing to its evolution in animals such as diurnal birds with limited time during the spring and summer to feed young. However, photoperiodic mechanisms regulating annual cycles could constrain the evolution of such migrations, depending on how they affect photoperiodic schedules. Most migratory programmes are consistent with known mechanisms of avian photoperiodism, but the range of feasible mechanisms declines for transequatorial migrants, which experience semi‐annual, 180°‐phase‐shifts in their photoperiodic cycles.
Understanding photoperiodic constraints on migration are particularly important in this age of changing latitudinal distributions and phenologies driven by climate change.
Hope this helps and have a great day!!! :D
Dominant & recessive alleles are similar to sex-linked alleles because...
A. both have alleles that are only present on the X or Y chromosome.
B. both have one allele that hides the other allele when it is present.
C. both blend the allele traits together in the phenotype.
D. both have two or more dominant alleles.
I will give brainliest please help
Answer:
B. Both have one allele that hides the other allele when it is present
Many animals live in large groups to increase their chances of survival and reproductive success.
Which statement provides evidence that living in groups is beneficial to its members?
A. Animals living in large groups tend to attract more predators.
B. Animals living in large groups tend to spread diseases more easily.
c. Animals living in large groups are able to hunt and take down larger prey.
D. Animals living in large groups tend to compete more for resources and mates.
Answer:
D. Animals living in large groups tend to compete more for resources and mates.
is limited food supply a biotic or abiotic factor
whatr is the function of autotropns in the carbon cycle
Answer:
The biological carbon cycle
Autotrophs capture carbon dioxide from the air or bicarbonate ions from the water and use them to make organic compounds such as glucose. Heterotrophs, or other-feeders, such as humans, consume the organic molecules, and the organic carbon is passed through food chains and webs.
Explanation:
Is anaphase II similar to anaphase in mitosis?
A. Yes
B. No
Answer:
A
Explanation:
If a sample of DNA is 21% adenine, it would be % cytosine.
Answer: 28%
Explanation:
Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio
21% Adenine and 21% Thymine
21% + 21% = 42 100 - 42 = 56 56 / 2 = 28
28% Cytosine and 28% Guanine
Animal life tends to stay away from areas
where succession is beginning, for which of
the following reasons?
A. Animal life does not tend to stay away from areas beginning
succession.
B. There are few resources there to be consumed.
C. Ecological succession releases harsh chemicals that would
harm animals.
Which statement about the relationship between the ocean and atmosphere is most accurate?
A: Ocean currents do not affect the atmosphere
B: The atmosphere stores mores heat than the ocean
C: The clean can hold heat more efficiently than the air
D: Ocean currents can move faster than air or wind currents
( THIS IS 8th GRADE EARTH SCIENCE)
Answer:
C
Explanation:
. You could consider the chloroplasts and mitochondria in cells to be analogous to a. waste dumps. c. power plants. b. resource depletion centers. d. self-contained, non-interactive entities.
Answer:
power plants
i think but i dont really know sorry
Explanation:
Biology multiple choice.
Answer:
A
Explanation:
the ectoderm is the outer cell layer. Note the root ecto- this means outer
Describe the importance of Tiktaalik roseae to the study of evolution.
Answer:The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins.
Explanation:can i have brainless?
Tiktaalik roseae was famous for his discovery of well-preserved pelves and a partial pelvic fin in aquatic organisms. These structures support aquatic organisms to a large extent.
What is Evolution?Evolution may be defined as a methodology through which gradual changes in organisms may take place over many generations. Due to this, a species of animals, plants, or insects slowly change some of their physical characteristics and adapt to nature.
According to the context of this question, it was the time of about 3.75 million years ago, when the transition between fish and first-legged animals was observed. This observation clearly demonstrates that the evolution of hind legs in the animals was actually initiated through the hind fins of the fish.
Therefore, the importance of Tiktaalik roseae to the study of evolution is understood by the fact of describing well-preserved pelves and a partial pelvic fin in aquatic organisms.
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need this answer quick pls thx
Answer:
option C. crossing over
Explanation:
Number the steps to carry out an investigation:
1.
Make a hypothesis
2.
Collect Data
3.
Conclusion
4.
Gather materials
5.
Carry out the procedure
6.
State the problem/questions
1 A.
2 B.
3 C.
4 D.
5 E.
6 F.
Explanation:
Number the steps to carry out an investigation:
These are the number of steps to carry out an investigation:
State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusionWhat is an Investigation?
An investigation is defined as a thorough discovery of facts, which are hidden or need to be resolved in a complex situation. The goal of an investigation is to determine how or why something happened. Investigation is usually formal and official.
It is the collection of facts to accomplish a three-fold aim to:
1. Identify the suspect
2 .Locate the suspect
3. Provide evidence of his guilt
Investigation involves the six steps. These are:
Purpose/QuestionResearchHypothesisExperimentData/AnalysisConclusionThus, these are the number of steps to carry out an investigation:
State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusion
Learn more about Investigation, here:
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Which is an example of antiracist behavior?
A. Rachel pretends she didn't hear a negative comment about
Latinos.
B. Rachel mentions that some of her best friends are Latino.
C. Rachel says it's wrong to say negative things about Latinos based
on a stereotype.
O D. All of the above
What happens when an organism is able to acquire all the necessary resources it needs to survive over time?
Answer:
It will lead to extension.
Explanation:
If something is a need for an organism, and that resource is not replenished over time the organism will go extinct.
Biology multiple choice.
Answer:
False
Explanation:
The vascular cambium forms outside the xylem, but NOT the phloem.
https://th.bing.com/th/id/OIP.RzrbM9jY6zdWYt5jBKhX0QHaEu?pid=ImgDet&rs=1
One of the limitations of the light microscope is the _____.
Answer:
resolving power.Explanation:
The principal limitation of the light microscope is its resolving power.
Using an objective of NA 1.4, and green light of wavelength 500 nm, the resolution limit is ∼0.2 μm. This value may be approximately halved, with some inconvenience, using ultraviolet radiation of shorter wavelengths.
_____ is a side effect of tabacco use
Answer:
Cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD)Explanation:
Hopes this helps. Mark as brainlest plz!Most waves are created by ocean currents
Answer: yes
Most waves in the ocean are wind generated waves. Ocean surface currents are produced by major overall patterns of atmospheric circulation, the Coriolis Effect and the shape of each ocean basin. Ocean surface circulation brings warm equatorial waters towards the poles and cooler polar water towards the equator.
Explanation:
PLEASE HELP 50 POINTS BRAINLIST
Answer:
the answer is D
Explanation:
Determine the volume for all 3 problems
Answer:
The volume of the cube is 168cm^3
The volume of the liquid is 24mL
The volume of the rock is 25mL
A source of carbon...
what is a source of carbon
Answer:
coal, and oil are main sources of carbon dioxide
Explanation:
Vesícula e vacúolo são a mesma coisa ?
Answer:
Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular
Heat energy is transferred through solids, liquids, and gases. How is heat transferred throughout the world’s oceans?
A) The warmed atmosphere transfers energy as heat to the rivers and the energy is distributed by conduction to oceans.
B) Sunlight penetrates the ocean’s waters, evenly distributing energy as heat from the surface to the ocean floor.
C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.
D) Convection currents are driven by sunlight warming surface waters, which flow throughout the oceans, distributing energy as heat.
Answer:
C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.
Explanation:
Heat is transferred between the surface of a sea or ocean and the atmosphere through radiation, convection, and turbulent heat exchange and by means of the evaporation of water and condensation of water vapor above the sea or ocean.
If it's not C then my best guess would be D. This one is kind of tricky!!
Hope this helped!!!
A DNA strand has the following bases: A G A C C A T A . What are the bases on its complementary RNA strand ?
Answer:
UCUGGUAU
Explanation:
remember there is no thymine in RNA instead there is Uracil. you can also remember them as Apple Under and Car Garage.
hope this make sense:)
13 The environment can affect a person's health. Which of the following diseases
would be most adversely affected by cigarette smoke?
F emphysema and Parkinson's disease
Gasthma and gonorrhea
H asthma and Parkinson's disease
I emphysema and asthma
After phagocytosis occurs, enzymes from which organelle can digest what is in the vesicle/vacuole?
Answer: Phagocytosis and Autophagy
Such large particles are taken up in phagocytic vacuoles (phagosomes), which then fuse with lysosomes, resulting in digestion of their contents.
Explanation: That's what I would say. Hope this helped and i hope you have a beautiful day:]
Answer:
lysosome
Explanation:
Which is not true of viruses?
1. They are tiny, nonliving things that can enter a cell and reproduce inside.
2. They cannot make or use food.
3. They act like parasites and can live in a host organism and cause harm.
4. They are like living things because they can reproduce and make more viruses.
5. They are made of cells.
Explanation:
option 5 is not correct as viruses are acellular organisms.
15. Artificial Selection is also kinow as survival of the fittes! True or false
Question 9
Food web....
A. An animal that eats only other animals
B. An animal that eats only plants
C. A diagram for displaying the feeding relationships among all the organisms in an ecosystem
D. An organism that eats dead or decaying matter and changes it into nutrients or minerals
Answer:
d is correct
Explanation: