A pesticide was applied to a population of roaches, and it was determined that the LD50 was
55mg/kg . If the average mass of a roach was 0.02kg, which of the following approaches will
determine the dose in
mg per roach?
Based on the information given, the correct option will be C. 55mg/1kg × 0.02kg.
From the complete information, it was stated that a pesticide was applied to a population of roaches, and it was determined that the LD50 was 55mg/kg.In a situation where the average mass of a roach was 0.02kg, the approach that will determine the dose in mg per roach will be 55mg/1kg × 0.02kg.
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That’s the right answer for that question
Answer:
ok better learn from your mistakes
Explanation:
1.
Which has the greatest impact on the temperature of the Earth's atmosphere?
chemical runoff
sulfur dioxide
carbon dioxide
Ozone
How do tides affect the organisms living in intertidal zones?
A.
Only plants live in intertidal zones because the animals float away with the waves and never return.
B.
The mechanical forces of the waves keeps the organisms clean.
C.
The mechanical forces of the waves can dislodge the organisms from their habitat.
D.
No organisms live in intertidal zones due to the tumultuous environment.
What is the name of the gland located above each kidney?
o thyroid gland
O
pancreas
pituitary gland
o adrenal gland
Answer:
It's the thyroid
Explanation:
I took the test
3. We get
our
physical traits from our parents
O True
O False
Answer:
This is true.
Answer:
true
Explanation:
it alters the DNA of germ cell
describe one similarity and one difference between fungi and plants
Explanation:
Both the plant and fungus kingdoms have some common characteristics. ... While both are eukaryotic and don't move, plants are autotrophic - making their own energy - and have cell walls made of cellulose, but fungi are heterotrophic - taking in food for energy - and have cell walls made of chitin.
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Please help! I am giving lots of points for this.
Answer: It is easier for birds and insects to pollinate
Explanation:
Help due by 946 am pacific HELP ASAP
Answer:
What do you need help with? I see nothing attached.
Research a article on how climate change effects polar bears. 7-10 sentences. And don’t use any articles that are .com and attach your article link:)
Answer: https://www.wwf.org.uk/learn/wildlife/polar-bears#:~:text=Challenges%20affecting%20polar%20bears&text=The%20Arctic%20is%20warming%20about,ice%20to%20raise%20their%20young.
https://www.carbonbrief.org/polar-bears-and-climate-change-what-does-the-science-say
Explanation:
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Answer:
50%
Explanation:
An airplane flies with a constant speed of 760 km/h. How far can it travel in 2 1/2 hours? Distance =
What are the two factors that determine the boundaries of a biome?
altitude
temperature
precipitation
latitude
Answer:
A. altitude
and
D. latitude
Explanation:
hope this helps! :D
The two factors that determine the boundaries of a biome are temperature and precipitation, which are the second and third options, as they help to shape the unique features of each biome.
What is the significance of the precipitation and temperature?Temperature plays a key role in determining the type of vegetation, such as in colder regions where low temperatures limit the types of plants that can grow, while in warmer regions the growth of tropical rainforests is seen. Precipitation plays an important role too, as in areas with high levels of precipitation, such as tropical rainforests, dense vegetation is seen, and in dry regions with low levels of precipitation, deserts are seen.
Hence, the two factors that determine the boundaries of a biome are temperature and precipitation, which are the second and third options, as they help to shape the unique features of each biome.
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Tectonic plates often shift position by the force of liquid rock emerging from below the Earth’s surface and then cooling to form hard rock.
This most often occurs _____.
< 1 >
PLAY
STOR
of science to answer the
10
The students want to see how changes to the design of the marble track will
affect the energy of the marbles.
(a)
As you respond to Part A, Part B, and Part C, follow the directions below.
estigate how the potential
he marbles move through
e different materials the
• Address all the instructions in each prompt.
• Use evidence from the information provided and your own knowledge of
science to support your responses.
Part A
One student wants to increase the potential energy of the marble at the starting
position. Explain one way the students can adjust the track to increase the
marble's potential energy. In your explanation,
• describe the dimensions of any materials used to adjust the track and
• explain why the adjustment to the track would increase the marble's
potential energy
Answer:
ay ewan ko ba tanungin mo sa mama mo idiot
If two copper wires are the same length but different thicknesses, the ____ wire has more resistance to current. Group of answer choices thinner thicker
A red animal (AA dominant) mates with a yellow animal (aa recessive). What would be the genotype and phenotype of a heterozygous offspring? (Assuming
complete dominance)
a.phenotype (yellow): genotype Aa
b.phenotype (red); genotype AA
c.phenotype (yellow); genotype aa
d.phenotype (red): genotype Aa
Answer:
d.phenotype red: genotype Aa
Explanation:
a red animal that is a Donna Mae a would still have dominance over the yellow animal it recessive so if you put it in the chart form AA would be on top and the lowercase a a would be on the left side so it would be phenotype red genotype capital a lowercase a .
In codominance, the genotype of the cross will be Aa and the phenotype will be yellow. Therefore, option "A" is correct.
What is codominance?Codominance is a genetics-related term. The term means a type of inheritance, where two versions (alleles) of the same gene are expressed separately. This lead to the yield of different traits in the offspring. Examples are when in animals such as speckled chickens, having alleles for both types of feathers, black and white.
Roan cattle is also an example of co-dominance, which expresses alleles for both red hair and white hair. Codominance is also present in plants. Examples are rhododendrons which have a simultaneous expression of red and white genes for flower color display flowers with both red and white petals.
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PLZ HELP AG CLASS
Shifting from hand picking to mechanical picking results in which of the following improvements?
A increased efficiency of harvest
B reduced risk of damage to trees
C increased control of sorting
D reduced need for high-tech equipment
Answer is A.
Mechanical picking results in faster harvesting and it is less time consuming compared to hand picking. therefore it increased the efficiency of harvest
If the answer is incorrect, the next possible answer would be C.
Answer:
efficiency
Explanation:
no balls
1. Predict: How do you expect the spread of a foodborne disease to be similar to and different
from the spread of a person-to-person disease?
PLEASE ANSWER
Answer and Explanation:
The transmission of diseases through food and through people to people, are similar because both are caused by human contact with infectious parasitic agents such as bacteria and viruses. However, it is possible to notice some differences between these two types of transmissions.
Transmission of disease through food occurs when an individual eats contaminated food or drinks contaminated liquid. This contamination occurs due to the lack of hygiene of the handlers and storage problems, which can allow microorganisms, mostly bacteria, to grow in the food. Thus, when the contaminated food is ingested, the microorganisms will release toxins in the stomach that will cause disease. In the case of water, contamination can also happen due to the lack of basic sanitation and the incorrect dumping of garbage and human waste.
Diseases transmitted from person to person can occur in many different ways. One of the best known ways is through the contact of a healthy person with salivary goths or other body fluids of a person with the disease. However, this transmission can also occur through the contact of a healthy individual with the feces of a sick individual and even with physical contact with a sick individual.
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Look at the Density of substances table. Why would the other substances not mentioned in the previous answer not be buoyant in pure water?
A. they are metals
B. they are denser than pure water.
C. diamonds are clear
describe the structure of the ovule and the formation of the embryo sac
brainliest to the first well detailed correct answer
Answer:
An embryo sac is said to form when the haploid megaspore nucleus divides. It possesses two haploid nuclei and six haploid cells which do not have cell walls.
Explanation:
please help
There are many different chordates. Choose fifteen chordates to explore. As you explore fill in the chordate chart that can be downloaded below. For each chordate you will need to check if it is a vertebrate or invertebrate, when in its life cycle did it have a notochord, when in its life cycle did it have gill slits and note any other interesting fact about your animal.
Answer:
Giraffe - vertebrate
white tiger - vertebrate
Study the image of a plate boundary. The Asthenosphere is being divided by the Lithosphere on the left of the diagram. Oceanic crust is above the Lithosphere and continues until it reaches the Continental crust on the right. The Lithosphere layer on the right is moving left toward the Lithosphere layer on the left that is moving right and down. Two volcanoes are above the area where the lithosphere layers meet. Which feature is forming? mountain rift valley earthquake island chain
Answer:
Sorry about the guy above me lolz, the answer is A :))
Explanation:
Have a great day !! muah
Answer:
It is island chain which on mine is D
Explanation:
Which substance provides the brain and body with glucose and energy?
What process is occurring in this picture at B?
Answer:
Translation
Explanation:
Translation is the second process that occurs in protein synthesis. It is the process whereby mRNA template is used to synthesize an amino acid sequence, which eventually becomes a protein.
The process of translation occurs in the cytoplasm (specifically in the ribosome). As depicted in this image, the mRNA produced during transcription is transported out of the nucleus into the cytoplasm. A RNA molecule called tRNA reads the mRNA sequence (codon by codon) and carries corresponding amino acid into the growing amino acid sequence.
Hence, according to this question, the process occuring at B according to this image is TRANSLATION.
Atoms of which two elements have a combined total of 23 protons?
Boron, B, and carbon, C
⊝
Sodium, Na, and magnesium, Mg
⊝
Copper, Cu, and zinc, Zn
⊝
None of these
5×8+2÷2×3
what is the answer
Answer:
is this a joke
Explanation:
5/8 : 2 2/3 = 1564 = 0.234375
An ecosystem engineer can cause a cascade of effects including abiotic and biotic changes.
O True
False
Answer:
O True
Explanation:
Ecosystem engineers are able to modify the surrounding environment, either by creating new habitats or modifying/destroying existing ones to adjust them to their needs. These species can significantly alter their environments, having a large impact on the species richness as well as modifying the availability of abiotic factors (e.g., water, space, etc) of a particular area. In certain environments, ecosystem engineers can even act as keystone species. Some examples of ecosystem engineers include, among others, beavers, woodpeckers, corals, etc.
Plants can reproduce both sexually and asexually. What are some examples of sexual reproduction in plants? Select ALL that apply. Responses
Sexual reproduction in plants involves the fusion of male and female gametes to produce offspring with genetic diversity.
Mechanisms that facilitate sexual reproduction in plants are examples:
1)Pollination and Fertilization: Many plants rely on pollinators, such as bees, butterflies, or birds, to transfer pollen from the male reproductive structures (anthers) to the female reproductive structures (stigma) of flowers.
This process enables the fusion of sperm cells within the pollen with egg cells in the ovules, leading to fertilization.
Examples include flowering plants like roses, sunflowers, and apple trees.
2)Seed Production: After fertilization, the ovule develops into a seed. Seeds contain an embryo, formed by the fertilized egg, enclosed within a protective seed coat.
The mature seeds can disperse and germinate to give rise to new plants.
Various plant groups, including angiosperms (flowering plants) and gymnosperms (conifers and cycads), reproduce sexually through seed production.
3)Alternation of Generations: In plants with a complex life cycle, such as ferns, mosses, and liverworts, sexual reproduction involves an alternation between two distinct generations: the gametophyte and the sporophyte.
The gametophyte generation produces gametes (sperm and eggs) through specialized structures, while the fusion of gametes gives rise to the sporophyte generation, which produces spores.
4)Self-fertilization: Some plants have the ability to self-fertilize, where the pollen from the anther of a flower is transferred to the stigma of the same flower or another flower on the same plant.
This allows for sexual reproduction without the need for external pollinators. Self-fertilization can be seen in plants like tomatoes, peas, and certain grass species.
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How many grams of water can be heated from 20.0 oC to 75oC using 12500.0 Joules? The specific heat of water = 4.186 joule/gram °C
Answer:
The correct answer is - 0.054 kg
Explanation:
Given:
change in temperature: 55°C
Heat energy = 12500 J
specific heat = 4.186
Formula:
The formula for Heat Energy is given by:
Q = mcp∆T
here: Q - Heat Energy
m is for mass
cp is for specific heat
∆T is a change in temperature,
Solution:
From formula,
m = Q/ cΔT
Mass = 12500 / (55 × 4200)
= 0.054 kg or 54 g