Answer:
The impact of pesticides on soil biota can be either positive or negative, depending on the type of pesticide used. Genetically modified organisms (GMOs) are generally designed in order to be more resistant to pesticides, thereby GMOs might have a higher impact on the soil biota (however, the evidence is not conclusive and case by case should be evaluated)
Explanation:
Traditional chemical pesticides are chemical substances used to control pests (e.g., insect pests affecting corn yield). Examples of traditional chemical pesticides include 2,4-Dichlorophenoxyacetic Acid, DDT, Atrazine, Chlordecone, etc. The impacts of these traditional pesticides on soil biota are variable according to the type of product used, the rate at which these products are applied, the target/non-target soil biota (e.g., bacteria, algae, fungi, protozoa, insects, nematodes). For example, it has been reported long-term contamination of DDT on soil microflora (i.e., microalgae and cyanobacteria), thereby these non-target species declined with increasing DDT use; however, direct effects on fungi populations were not observed. Genetically modified organisms (GMOs) are organisms whose DNA has been engineered by using molecular biology techniques. In crop improvement, GMO plants are designed to be more resistant to chemical pesticides and also to produce pesticides themselves, for example, Bt crops that produce a toxin from Bacillus thuringiensis (Bt) that can kill insect pests. GMO plants can also be designed to be more resistant to pesticides, thereby affecting soil biota at higher scale values. Nonetheless, it is important to highlight that like chemical pesticides, the effects of GMOs on soil biota are also variable depending on the type of GMO, which pesticide GMO is producing, target/non-target soil species, etc.
10. What enzyme unzips or breaks apart DNA for replication?
A. Helicase
B. Ligase
C. Polymerase
D. Okazaki
Answer:
a. Helicase Helicase the double helix bond is broken.
What does the axon of a neuron do?
A
protect the dendrites
B
carry signals away from the soma
C
insulate the myelin sheath
D
process the information it receives
Bees with short tongues are able to obtain nectar from deep flowers by drilling holes in the base of the flower without visiting the top of the flower. This behavior does not kill the flower. In a particular environment, bees with short tongues replace bees with long tongues. Predict the effect on the proportion of plants with deep flowers in future generations. Justify your prediction.
Answer:
The proportion of plants with deep flowers in future generations will decrease and will be very low.
Explanation:
To analyze this, we need to keep in mind the pollination process and the following general ideas:
Bees with long tongues can obtain nectar from deep flowers by visiting the top of them and extending their tongues to their bottom.During their visit to the flowers and their search for nectar, long-tongued bees transport pollen from flower to flower, favoring pollination.Bees with short tongues can obtain nectar from deep flowers by drilling holes in their base without visiting their tops.Short-tongued bees do not need to access the nectar by the top of the flower. They do not get in contact with stamens, so they do not play a pollinator roll. In a particular environment, bees with short tongues replace bees with long tongues.In this particular environment, long-tongued bees used to visit plants with deep flowers to get their nectar. They used to get in contact with mature stamens and carry the pollen on their bodies to the next flower. During this process, long-tongued bees were able to ensure pollination and helped to keep a high reproductive rate of plants with deep flowers.
When shorted-tongue bees arrived at this environment, they were able to replace long-tongued bees. They also looked for the nectar of deep flowers, but instead of visiting them from the top, they were adapted to obtain nectar by drilling holes in the flower base. In this way, they missed the contact with mature stamens and pollen.
Long-tongued bees disappear, and short-tongued bees did not play a role in the pollination process of deep flowers, then the reproductive rate of these vegetable species probably started to decline.
Probably, with time, the proportion of plants with deep flowers in an environment dominated by short-tongued bees will be very low.
The proportion of plants with deep flowers in future generations will decline if bees with short tongues replace bees with long tongues.
What do you mean by environment?Anything which is present in the surrounding of an organism is called its environment. It may consist of Biotic and abiotic factors.
Bees with short tongues are able to obtain nectar from deep flowers by drilling holes in the base of the flower without visiting the top of the flower. In this way, such bees are not in contact with mature stamen and pollen. Therefore, they will not play an effective role in pollination. And if such bees are replaced with long tongues bees, there will never be a deep flower obtained. Deep flowers are obtained by long-tongued bees because they take nectar from the top side and with it they also take mature stamen and pollen to perform successful pollination.
Therefore, the proportion of plants with deep flowers in future generations will decline, if bees with short tongues replace bees with long tongues.
To learn more about Pollination, refer to the link:
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The _____ system is the most common system of measurement used in the world today
Answer:
The metric system
Explanation:
two most common systems of measurement: the metric system, used widely in Europe and most of the rest of the world, and the Imperial or British system, a form of which is now chiefly used in the USA.
Help me pls it’s due today
Answer: It's either B or C
Explanation:
What variables would you likely need to control? Check all that apply.
The batteries in a flashlight are Dead and the flashlight no longer works. What happened to the energy that was in the battery
Answer:
See the answer below
Explanation:
When the batteries in a flashlight become dead and the flashlight no longer works, it means that the chemical energy present in the battery has been converted to electrical energy to power the touch and eventually got lost to the environment as heat.
In a typical flashlight that works with batteries, the chemical energy in the batteries is converted to electrical energy, and this powers the bulbs in the flashlight. Gradually, the electrical energy is converted to heat energy and this is lost to the environment by radiation. When all the energy is lost to heat, the batteries are said to be dead and the flashlight stops functioning.
The house fly, Musca domestica, has a haploid chromosome number of 6. How many chromatids should be present in a diploid, metaphase cell (metaphase of mitosis)
24 chromatids should be present in a diploid, metaphase cell (metaphase of mitosis).
What is mitosis?Chromosome replication and equitable distribution between the two daughter cells occur during the cell division process known as mitosis. Each daughter cell has the same number of chromosomes as the parent cell, making them diploid. Hence, mitosis is sometimes referred to as equational division.
There are four phases in mitosis and that is prophase, metaphase, anaphase, and telophase.
Thus, If the house fly has a haploid chromosome number of 6, which means it has 12 chromosomes in a diploid state. When a cell undergoes mitosis, the diploid chromosome number of the cell becomes double. Therefore, there will be 24 chromatids in a diploid metaphase cell.
Learn more about mitosis, here:
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#SPJ6
look at the picture
Answer:
What was the question of it
Functions of cell wall
Answer:
it protects the plant cell it give the shape to cell
Your friend's parents have the bloodtypes A (genotype I^i) and B (genotype 1Bi). What possible
bloodtypes does your friend have? (Choose all that apply)
None of these
B
О
АВ
A
plss helppp!!
Which of the following is an example of indirect evidence about Earth's
layers?
A. rock samples obtained by drilling
B. mantle rocks produced by volcanoes
C. changes observed in seismic wave data
D. data gathered from high-pressure lab experiments
Answer: I believe the answer would be C -- Changes observed in seismic wave data.
Explanation:
Geologists use rock samples as direct evidence about earth's layers, and they use seismic waves as indirect evidence to study the Earth’s structure.
I hope this helps!
The Earth is ________________of years old
Answer:
the earth is 4.543 billion years old
Clever ones this is one for you
If you throw a pebble into a pond, ripples spread out from where it went in. These ripples are waves travelling through the water. The waves move with a transverse motion. The undulations (up and down movement) are at 90° to the direction of travel.
Answer:
so please Indicate your question
20 POINTS PLZ NEED HELP
I really fluffed up and need help
Directions: Follow the steps below to learn how to lower energy use.
Materials
You will need two saucepans about the same size with lids, a watch or a clock, water, a stove, two eggs.
Pour equal amounts of water into each saucepan. Make sure both have enough water to cover an egg.
Cover one saucepan with a lid.
Put the saucepans on separate burners of the same size on your stove and turn them on to high.
Start timing to see which pot of water comes to a vigorous boil first. (You’ll have to listen to the covered one to tell when it boils—lifting up the lid will spoil the experiment.)
How much longer does it take the second pot of water to boil?
When the two pots of water are boiling:
Place an egg in each one and cover both pots.
Leave one burner on high heat and lower the other to simmer.
Time them for three minutes then remove both eggs at the same time.
Break the eggs and see if one is more cooked than the other.
Explain your observations and what you can conclude based on what you know about heat and energy conservation.
one egg is hard semi-ish boiled and the other is not at all
Describe endocytosis, phagocytosis, pinocytosis, and exocytosis.
Answer:
Endocytosis: Endocytosis is the process by which cells take in substances from outside of the cell by engulfing them in a vesicle.
Phagocytosis: Phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles.
Pinocytosis: Pinocytosis, a process by which liquid droplets are ingested by living cells.
Exocytosis: Exocytosis is the process by which a large amount of molecules are released; thus it is a form of bulk transport.
Explanation:
All stages of plant development are called?
Answer:
seed stage, Germination, Growth, Reproduction, Pollination, and Spreading Seeds
Explanation:
Hope this helps!
Answer:
lifecycle!
Explanation:
two choice sorting device used in taxonomy
whats is friction?????
Answer:
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Explanation:
Think of this as two magnets of opposite pushing against each other. Or a bowling ball running into the bowling pins.
how do tears protect us against infective conjunctivitis
Answer:
Preventing infection Foreign bodies that enter the eye are washed out by tears. Moreover, tears contain a substance called lysozyme, which has an antibacterial action, and works to prevent invasion and infection by microbes. Healing damage to the surface of the eye
Explanation:
Science. Help I really need this giving brainliest to the person with the correct answer, please explain your answer...........
Answer:
A and B
Explanation:
A botanist finds that when compared to pink flowers, the population of purple flowers is very high. Ten years later, the population of purple flowers is nearly gone, and the number of pink flowers has tripled. Why would this be?
Answer:
Because of the reduction or near extinction of the purple flowers noticed by the botanist Ten years after it was in abundance, this fall in the population could be caused by the unfavorable change in the plant's environment. While the pink flowers tripled because some factors in the environment were favorable for its growth.
Explanation:
From the question, it was mention that the botanist noticed at first purple flowers had more population than the pink flowers and that changed after 10 years when the population of the pink flowers tripled and purple flowers were nearly gone. Some of the causes that could be responsible are:
1. Disease and pest attack on the purple flowers.
2. The pink flowers developed a good survival mechanism even in adverse conditions.
3. Environmental stress could also come into play on the purple flowers.
4. Climate which initially supported the growth of the purple flowers had changed. Because variations exist in plants and the ideal conditions necessary for plant growths and proliferation varies among plants.
.
What patterns do you see in the similarities and differences between Hox genes in
humans and in fruit flies?
Explanation:
Hox genes are the master regulators of embryonic development for all animals, including humans, flies and worms. They decide what body parts go where. ... "We have exactly the same genes, and use them in exactly the same way," he says. "By understanding them in Drosophila, we can understand them in humans."
The study of genes is called genetics.
The answer is mentioned below.
What are genes?The genes are structural and the functional unit of DNA.
According to the question, Hox genes are the master regulators of embryonic development for all animals, including humans, flies, and worms. They decide what body parts go where. "We have exactly the same genes, and use them in exactly the same way," he says. "By understanding them in Drosophila, we can understand them in humans."
For more information about the genes, refer to the link:-
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Why does Dr. Davis emphasize that people need to return to their hometowns to work?
Answer: C. he believes returning to get back will inspire others to make changes and do the same
Explanation:
Explain the role of nutritional systems in contributing to the maintenance of homeostasis in organisms.
Answer:
Nutritional Systems are very important when it comes to homeostasis. The body needs certain nutrients when performing the body's daily functions. The body needs nutrients like proteins and carbs because they contain energy. The energy from these nutrients help the body to it's daily tasks and stay healthy.
How do humans affect the traits of other living things?
PLEASE HELP MY ASSIGNMENT IS DUE AT 3:30PM TODAY!
Answer:
Explanation:
well humans can play around with other animals DNA meaning is affect their protein thus their traits and example of this is genetic engineering
Answer and I will give you brainiliest
heeeeelp PLZ
The normal sodium level in human blood is 135 mEqjL. If a blood test taken immediately after a meal reveals a sodium level of 150 mEqjL, what will most likely result
Answer:
Causes high blood pressure, heart disease, and stroke.
Explanation:
Increase occur in high blood pressure, heart disease and stroke due to increase in sodium level in the blood. If the meal has no sodium then there is no increase occur in the sodium level in human blood while on the other hand, if the meal has more sodium then there is high increase in sodium level in human blood which causes high blood pressure, heart disease, and stroke.
The moon is roughly one-sixth the size of the earth.
Which statement is true?
The gravitational pull of the moon is greater than the earth because it is larger than earth.
The gravitational pull of the moon is less than the earth because it is smaller.
There is no gravitational pull on the surface of the moon.
The gravitation pull of the moon is the same as the earth because they are both spheres.
Answer:
The gravitational pull of the moon is less than the earth because it is smaller.
Explanation:
Objects with more mass have a larger gravitational pull. Just like stars, which are many, many times more massive than planets, have a larger gravitational pull.
Which of the following does NOT cause desertification?
Select one:
a. Advancements of existing deserts
b. Overuse of cropland leading to soil degradation
c. Deforestation