Answer: Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Answer:
Negative
Very small charge in water.
write it in your own words
Why is it important to know there are good and bad bacteria?
Question 42
1 pts
A man with type O blood has a child with a women who is tye AB. What is the probability
that they will have a child with type o blood?
O 100%
O 50%
O 0%
25%
Are the following structures found in plant cells, animal cells, or both?
cell membrane
cell wall
nucleus
ribosomes
chloroplasts
mitochondria
Answer:
chloroplasts
Explanation:
What makes human populations increase or decrease in size?
I’ll mark brain list if you answer all of them
How did Bourne believe that an object could be made to rise and sink at will?
a.
By increasing and decreasing volume
c.
Putting more force on the object than the buoyant force
b.
Using a series of weights
d.
Piping air in from the surface
Please select the best answer from the choices provided
A
B
C
D
Answer:
A
Explanation:
a. By increasing and decreasing volume
Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart
The correct option is :
=》arteries do not have valves and veins do have valves.
Arteries don't have valves because back flow of blood isn't possible due to high pressure, but blood in veins doesn't have high pressure just like arteries, so to stop backflow of blood, veins have valves.
Which cell division phase is shown in the image?
A) telophase
B) metaphase
C) prophase
D) anaphase
Answer:
metaphase is the correct answer of this
Answer:
b is correct
Explanation:
ok ok ok ok ok ❤️❤️
5. In 1928, Alexander Fleming noticed that a mysterious blue-green fungus had grown on some bacterial colonies that were known to cause strep throat. Upon closer inspection, he noticed that the bacterial colonies did not survive when introduced to the fungus. He questioned if something in the fungus stopped the bacteria from growing. Which steps in the scientific method are included in this story
Answer:
The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.
Explanation:
The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.
In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.
What is an immune response?
Answer:
The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.
Hope this helps!
I need to know what is the answer for number 6 and 7 and that’s all
Answer:
you have it right
Explanation:
the boundary between two air masses IS CALLED A FRONT
A STATIONARY FRONT causes light rain over several days
what stores groundwater
Answer:
An aquifer is a rock layer that stores groundwater and allows the flow of groundwater.
what are some examples of heart healthy fats?
Answer:
Omega-3 fatty acids can help lower triglycerides, a type of fat that clogs arteries. Monounsaturatedfatsincludecanola,olive, and peanut oils. Other good sources are olives, avocados, nuts, and nut butters. These fats can help lower "bad" (LDL) cholesterol and raise "good" (HDL) cholesterol.
Explanation:
My dad takes omegas because he has high cholestrail which that also helps with heart problems.
The virus first hypothesis, suggests that:
a.
viruses evolved from the living cells
b.
viruses may have been the first self-replicating entities
c.
viruses originate from bacteria cells
d.
viruses don't evolve
Answer:
b.
viruses may have been the first self-replicating entities
Explanation:
The “virus-first” hypothesis states that viruses predated cells and contributed to the rise of cellular life. A significant proportion of all the viral genomes encode for genetic sequences that lack clear cellular homologs. Presence of such virus-specific sequences provides support to their unique origin.
Question 4
2 pts
In order to survive and reproduce, organisms need what type of traits?
Traits like the parents
Traits that make them the smartest
Traits favorable for survival
Traits that make them the most attractive
What is the most important influence of the forest ecosystem on the environment
Answer:
Forests
Explanation:
Forests have also sanitary influences upon environment due to the production of oxygen through photosynthesis.
The study of the environment is called ecology. There are two types of factors for an ecosystem and these are a biotic and abiotic factors.
The correct answer is light
What is photosynthesis?The process of the formation of food by trapping the sunlight with the help of chloroplast is called photosynthesis.
According to the question, the most influential factor which affects the environment is light as all the plants directly depend on the light for the formation of food and all the other species are dependent on plants either directly or indirectly.
Hence, the correct answer is light.
For more information about the light, refer to the link:-
https://brainly.com/question/1388366
Is there a human carrying capacity on Earth? Explain why or why not.
Answer: Every species has a carrying capacity, even humans. However, it is very difficult for ecologists to calculate human carrying capacity. Humans are a complex species. We do not reproduce, consume resources, and interact with our living environment uniformly.
HOPE THIS HELPS
What can cause thermal expansion that results in a change in the density of ocean water?
a climate change
b freezing temperatures
c weathering and erosion
d addition of sediments
Answer:
Explanation:
B because Thermal expansion is caused when seawater expands because of the higher temperature of the water. Since the oceans absorb heat from the atmosphere, when the atmosphere becomes warmer so will the oceans. Warm seawater has a greater volume than cold seawater.
if pointed heads are dominant to round heads, which of the following genotypes could express a round phenotype
Answer:
D - Pp
Explanation:
I initially thought it would be A - PP, but I realized D is actually the best answer since it includes both phenotypes with the allele for round heads (P) being dominant and, therefore, expressed.
Hope this helps you figure out the answer :) Have an awesome day!
Compare and contrast the outer core and the inner core. Mention 2 differences between the two cores.
Answer:
The outer core is colder than the inner core, and they are both inside the Earth. The inner core is the deepest layer of Earth's layers.
Explanation:
14. Cats have bones in their front legs that are similar to humans and also similar to the bones in the front flipper of a turtle. What do scientists hypothesize that
this means?
a These are homologous structures - they have similar structure despite their different functions and provide evidence that they evolved from a common ancestor.
b These are homologous structures - because of their different functions they do not provide evidence of a common ancestor and the limbs did not evolve from a single
common ancestor.
c These are analogous structures - they have similar structure despite their different functions and provide evidence that they evolved from a common ancestor.
d These are analogous structures - because of their different functions they do not provide evidence of a common ancestor and the limbs did not evolve from a single
common ancestor.
Accounts with not serious answers will be reported
Answer:
I believe that the answer is D.
Explanation:
This is because these organisms don't seem to evolve from a common ancestor but do seem to look similar.
Which process occurs by osmosis?
Select one:
a. plant roots absorbing water from the soil
b. the small intestine absorbing fatty acids into the blood
c. the small intestine absorbing glucose into the blood
d. plant roots absorbing mineral ions from the soil
Plant roots absorbing water from the soil occurs by osmosis.
Are roots absorbing water osmosis?Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Do plants absorb water through osmosis?Plants absorb water and minerals salt from the soil with the help of root hairs. They absorb water by the process of osmosis. Osmosis is the movement of water molecules (solvent) from a lower concentration solution to a higher concentration solution through a semi-permeable membrane.
Learn more about osmosis here https://brainly.com/question/11534932
#SPJ2
Potential energy is energy that is not in
motion. Which of the following is an
example of potential energy?
A. riding your bicycle
B. sitting on a bench
C. mowing your lawn
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An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
A. The eruption preserved an ancient human civilization.
B. The eruption's heat and energy killed all the farmers in its path.
C. The eruption contributed to global warming.
D. The eruption's ash and gas significantly dimmed the sun.
sun
E. The eruption killed many local people.
Describe at least two costs and two benefits of using a desalinization plant to obtain more freshwater?
Answer:
Advantages:
1. provide drinking water in desertic regions
2. excellent water quality
Disadvantages:
1. high cost to obtain freshwater
2. possible harmful effects on the aquatic ecosystem
Explanation:
Desalinization plants are centers that provide an independent source of water, critical for human needs. Desalination plants function to remove salt from seawater, thereby turning this water into potable drinking water, which is of vital importance for areas where freshwater is scarce (e.g., desertic regions). Moreover, desalinization plants meet (or even may exceed) standards for water quality because they are prepared to remove impurities (not only salts) from seawater. Nonetheless, desalinization plants may also exhibit disadvantages. In the first place, desalinization is an expensive process that requires an important amount of electricity to push water through a filter (desalinization occurs via reverse osmosis). Finally, desalinization plants may alter aquatic ecosystems in a negative way since the discharge of seawater modifies the salinity and decreases the oxygen levels in the water at the disposal site.
During which process does heat transfer occur because of density differences in water or air?
A. Conduction
B. Pollution
C. Radiation
D. Convection
2. Explain your answer.
Answer: D. Convection
Explanation: As water's temperature increases in the presence of a heat source, it will become less dense and rise. As it moves up and away from the heat source, it cools and becomes denser and sinks.
Answer:
The correct answer is D. Convection.
Explanation:
Convection occurs due to the differences in density, and only happens in gases or liquids. The heat is transferred by the movement of a heated fluid, which is air or water.
Hope this helps! :)
Eukaryotic gene regulation takes place through the use of RNA-
binding proteins called ________
and
short regions of DNA that help position RNA polymerase called
_________.
At the organism level, ________.
control the differentiation and development of cells during
embryonic development.
Answer:
Hi your answers would be transcription factors, TATA boxes, and homeotic genes
Eukaryotic gene regulation takes place through the use of RNA- binding proteins called transcription factors and short regions of DNA that help position RNA polymerase called TATA boxes.
At the organism level, homeotic genes control the differentiation and development of cells during embryonic development.
Transcription factor:Transcription factors are proteins involved in the process of converting, or transcribing, DNA into RNA. Transcription factors include a wide number of proteins, excluding RNA polymerase, that initiate and regulate the transcription of genes. Regulation of transcription is the most common form of gene control.
Find more information about genes here:
brainly.com/question/1480756
What is the answer to number three and four I’m like totally confused
Answer:
I think it is true for 3 and false for 4 but i am 100% so i won't trust me fully so yeah.
Explanation:
What is the role of the respiratory system?
What happens when you breathe?
What happens in the circulatory system?
What are the structures of the heart?
How does blood flow through the circulatory system?
What does blood contain?
Answer:
The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. It contains these parts: two lungs. ... various structures in the chest that allow air to move in and out of the lungs.
Calculate the net force in Newtons of the following situation <-2N+->8N
Answer:
The correct answer is: + 6 N to the right side.
Explanation:
In this question, there are two opposite forces one towards the left and the second one towards the right. The left-pointing force value of 2 [N] while the other Force points to the right with a value of 8 [N].
In arithmetic representation it could be demonstarted or write as:
F = -2 + 8
F = + 6 [N]
The force pointing right side is more and will have the force of = 6 N