Answer:
10 watt LED bulb.
Explanation:
The most energy efficient is 10 watt LED bulb because it produces more light by consuming less amount of energy. If a substance is more efficient so it consumes less amount of energy for doing its work while on the other hand, less efficient substances uses high amount of energy for doing its work so that's why we can say that 10 watt LED bulb is more efficient its as compared to incandescent bulb and a 17-watt compact fluorescent bulb which uses high amount of energy.
I NEED HELP PLEASE!
Answer:
The phenotypic ratio of this crossing is 9:3:3:1 whereas the genotypic ratio is 1:2:1:2:4:2:1:2:1.
Explanation:
If we cross red color organism with the yellow color organism, the phenotypic ratio of this crossing is 9:3:3:1 whereas the genotypic ratio is 1:2:1:2:4:2:1:2:1. In the F1 generation, all offspring are identical to each other means that all offspring resembles to male parent due to the presence of dominant allele while on the other hand, in the F2 generation, the ratio is 9:3:3:1 in which 9 ratio represents male parent, 1 represents female parent and the middle 3 represents hybrid which is different from their parents.
PLEASE HELP ITS EASY WILL GIVE BRAINLESS CURRENTLY FAILING
Answer:
It should be A and B because Genes are made of DNA.
Explanation:
‼️‼️‼️please help!!!
Answer:
fossil fuel use in automobiles
Explanation:
Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.
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Ethanol can be used as an additive or replacement for petroleum derived gasoline. What is the drawback to doing this ?
a. produces more air pollution than regular gasoline.
B. Ethanol is currently produced mainly from corn, which can influence food prices
c. Ethanol is actually nonrenewable and must be extracted from the ground
Answer:
B. Ethanol is currently produced mainly from corn, which can influence food prices.
Explanation:
hope this helps
Which part of the digestive system food nutrients move into the blood by diffusion
Answer:
Small Intestine
Explanation:
plz help I need this done by Monday
Answer:
Explanation:
answer is sex cells
You spill a little water on a tile floor but do not have time to wipe it up. A few hours later, most of the water is gone. What happened to the water
Answer:
The water molecules became a gas, and are now bonded with the air. (Evaporation)
Explanation:
Answer:
It evaporated.
Explanation:
Evaporation is the process by which water changes from a liquid to a gas or vapor.
What is the difference between an element and a compound?
1. Compounds are only fat in the earth
2. Elements never use capital letters and compounds do
3. Compound to makes up all masses
4. Elements cannot be broken down into another substance
Answer:
Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.
Explanation:
Substances can be categorised as either elements or compounds. Both of these are made up of atoms, the only difference is an element is made of one type of atom whereas compounds are made of two or more different types of atoms.
Answer:
4) Elements cannot be broken down into another substance
Explanation:
Compounds are made up of multiple elements (different or same element). Whereas, elements are made up of single type of atoms. Water is a compound which can be broken down into Hydrogen and oxygen using chemical reactions whereas, you cannot break elements down into another substance.
13 POINTS MY DUDES! AND NO LINKS OBVIOUSLY!!!
In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?
A. 2%
B. 49%
C. 16%
D. 35%
Answer:
D
Explanation:
34/96= 35%
The mathematical rule of three can be used to take probabilities. In the exposed example, the approximate probability of a moth being black is 35% (Option D).
------------------------
Available data:
47 moths are brown15 moths are yellow34 moths are blackThe total number of individuals in this population equals the addition of brown, yellow, and black individuals.
This total number of individuals equals 100% of the population.
So to get the probability of a moth being black, we can just perform a rule of three.
To do it, we need to get the percentage of black individuals in the current population.
96 moths ------------------------- 100% population
34 black moths ----------------- X= (34 x 100) / 96
=35.41 ≅ 35% of the population
The approximate probability of a moth being black is 35%.
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Which statement correctly describes the difference between cellular respiration and photosynthesis?
A.
Photosynthesis involves chemiosmosis, and cellular respiration doesn’t involve chemiosmosis.
B.
Photosynthesis doesn’t produce any ATP, and cellular respiration produces ATP.
C.
Photosynthesis occurs during the day, and cellular respiration occurs at night.
D.
Photosynthesis creates energy that the plant stores, and cellular respiration utilizes the energy.
E.
Photosynthesis is an anabolic reaction, and cellular respiration is a catabolic reaction.
Answer:
The answer is E.
Explanation:
An anabolic reaction is one that involves the building of complex substances from simple ones and it uses up energy. Photosynthesis is an anabolic reaction because It requires energy.
A catabolic reaction is one that involves the breakdown of complex substances into simpler ones and in the process energy is released. Cellular respiration is catabolic because energy is released during this process.
Answer:
The person is correct
Explanation:
I got it right
Which of the following cells should have the most mitochondria?
O skin cells
O muscle cells
O blood cells
O nerve cells
An experiment was designed to test the effect of ultraviolet light on the growth of mold spores. A sample of mold spores was divided into two groups. The groups were grown under the same conditions, except that group A was exposed only to ultraviolet light and group B was grown in total darkness. What is the purpose of group B being grown in total darkness?
To limit bias
It is the dependent variable
It is the control group
To add an alternative variable
Answer:
C
Explanation:
How many protons,electrons and neutrons are in a neutral atom with an atomic number of 35 and an atomic mass number of 81 contains?
Answer: the number of protons is 35 because the number of protons is equal to the atomic number which is equal to the number of electrons hence no need to waste your time on that.
Neutrons is the atomic mass - protons
81-35=46.
From my above explanation the number of electrons is equal to 35.
Explanation:
Please help does someone know anything about this
Acids are identified by hydrogen or hydroxide?
Answer:
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.
Explanation:
Kelp forests are unique and diverse coastal ecosystems in the ocean. How would a
decrease in biodiversity in these ecosystems, due to changing climate, affect the larger biosphere? please help!!!
Explanation:
Kelp forests are the anchor of nearshore ocean wildlife communities across the U.S. West Coast and northeast, sustaining marine biodiversity by providing shelter, habitat and even food for an array of fish and invertebrates.
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.
help me !! …………… …….
why are plants the start of the food web
List 3 examples of something that have evolved over time.
Answer:
peppered moth- became darker because of pollution
darwins finches- beaks became smaller over time to eat the smaller nuts/seeds left
deer mice- became lighter being as their surroundings changed/ones that moved from forrests
Answer:
Peppered mothDarwin's finchesDeer miceExplanation:
These are the 3 examples of something that have evolved over time.
Which type of growth can occur only when a population has unlimited resources?
limited
logistic
exponential
negative
Answer:
c. on edge
Explanation:
When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve. The correct answer is c) exponential.
What is the exponential growth curve?Exponential growth curves and logarithmic growth curves are the two different forms of growth curves. In an exponential growth curve, the slope increases steadily over time. A logarithmic growth curve has a steeply increasing slope that gradually flattens out over time.
The exponential growth curve, which has a J-shape, shows a period of time where the results develop rapidly and steadily. It is the reverse of gradual progress. This curve initially climbs gradually before accelerating, which represents multiplied growth.
With exponential growth, a population's growth rate per capita (per person) remains constant regardless of population size, causing the population to expand exponentially as it grows larger. In nature, populations may expand exponentially for a while, but ultimately, their growth will be constrained by the availability of resources.
Exponential expansion happens when resources are unrestricted. Due to the favorable conditions, there are a lot more births as a result of the food excess.
Therefore, the correct answer is c).
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Genes are strands of
found on chromosomes in the nucleus of a living cell.
A
mutations
B
DNA
C
minerals
D
cells
Answer:
b)DNA is the correct answer
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As wave crash into the coastline with great force, what is the correct order of formation
Answer:
Explanation:
mnk
ALL mutations have an effect on the protein.
A. True
B. False
Answer:
B. False
Explanation:
No; only a small percentage of variants cause genetic disorders—most have no impact on health or development. For example, some variants alter a gene's DNA sequence but do not change the function of the protein made from the gene.
Answer:
False
Explanation:
Only a small percentage cause genetic disorders.
define sublimation
Answer:
Explanation:
its where u turn a object in it's solid state directly to gas, without it entering the liquid state
Conservationists help to restore ecosystems. Which activity will positively affect the abiotic conditions of an ecosystem?
A.
Keeping lakes and rivers free of pollution.
B.
Planting new trees to provide food for animals.
C.
Monitoring the ecosystem for bacterial pathogens that can cause illness.
D.
Mating endangered animals in captivity and restoring them to their natural habitat.
what does a tortoise covering body do for it?
Answer:
Protection
Explanation:
Tortoises, especially babies, can become easy prey. Because of how small they are when they are young and how slow they are when trying to escape it makes them an easy meal. Their shells protect them from anything trying to crush or eat it.
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I really need help, can someone answer for me?
Answer:
there would be more food for the foxes so their population would increase
So it's the first one
HELP RIGHT NOW PLZZZZZZZZZ
1. Genes always follow Mendel’s rules of inheritance (true/false)
2. Predators kill prey,but are not harmful to the prey population(true/false)
3.Food webs are better at showing relationships in an ecosystem than food chains(true/false)
4. There are other producers besides plants (true/false)
5. Changes in the frequency of different alleles can happen because of mutation,gene flow, and genetic drift(true/false)
6. All mutations are beneficial because they bring about genetic variations and differences (true/false)
7. Natural selection makes sure that an individual can adapt and evolve.(true/false)
8. An animal cells only method of creating energy is through cellular respiration while a plant is only able to create energy through photosynthesis (true/false)
9. Bone cells, skin cells, red blood cells, and nerve cells all have the exact same DNA within your body(true/false)
10. Evolution has made our bodies perfectly fit for our current environments (true/false)
Answer:
Explanation:
1 false
2 true
3 true
4 false
5 false
6 true
7 false
8 true
9 true
10 false
In horses, the allele for a bay coat (brown with black mane, tail, and legs) and the allele for a cream coat can combine to make a
buckskin coat. The allele c is used for bay: CC is used for cream. Buckskin horses have one bay and one cream allele. The
genotype cc makes a buckskin coat, as neither allele is dominant. Cross a bay stallion (father) with a buckskin mare (mother).
How many offspring will have the same phenotypes as the mother.
Please help me
Answer:
100%
Explanation:
By crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).
An allele is a gene variant, diploid organisms (like horses) inherit two alleles for a given gene locus, one allele from the mother and another from the father.In complete dominance, the dominant allele completely masks the expression of the recessive allele in heterozygous individuals.In codominance, both alleles are expressed in order to produce a given phenotype.In conclusion, by crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).
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