Antibiotics have been used to treat bacterial infections since the 1940s. In
recent years, many antibiotics have become less effective as resistance to
these treatments rises. Which statement best describes how bacterial
resistance to antibiotics demonstrates natural selection?
Answers
Related Questions
If a race car's velocity is increasing rapidly, we
would notice
its velocity-time graph.
on
A a steep positive slope
B a shallow positive slope
C a shallow negative slope
Da steep negative slope
Answers
If a race car's velocity is increasing rapidly, we would notice its velocity-time graph on a steep positive slope, therefore the correct answer is option A.
What is Velocity?The total displacement covered by any object per unit of time is known as velocity.
acceleration = slope of the velocity time graph
As per the given problem statement If a race car's velocity is increasing rapidly, we would notice its velocity-time graph on a steep positive slope because the rapidly increasing speed represents.
To determine the object's acceleration, utilize the positive acceleration and the slope of the velocity time graph.
Thus, the correct answer is option A.
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how sclerenchyma tissues are important for plant though they are dead tissue ?
Answers
Answer:
Hey friend !!!
The cells of sclerencyma are without nucleus and protoplast....they are dead cells..
They provide mechanical support to organs of the plant body....
Hence they are important for plants....
Answer:
Sclerenchyma tissues are tissues that makes up parts of the plants that are hard. Like the nuts and covering seeds etc, These tissues have a hard thickness providing agent called lignin and lignin makes the cell wall too hard the sometimes the cell contains nothing. This cell mainly provides mechanical support to the plant
I need an example of dehydration synthesis
Answers
Answer:
Polymerization reactions
Explanation:
monomer units condense together to form polymers.
Answer and i will give brainly
Answers
Answer:
Pneumonia
Explanation:
The answer is most likely Pneumonia as Emphysema doesnt usually have fluid in lungs as a symptom.
Answer:
pneumonia
Explanation:
because pneumonia leads to fluid build up in the tiny air sacs in your lungs, but it's caused with the virus, bacteria or fungus. symptoms include coughing, shortness of breath and more.
What are some negative impacts of carbon storage in ocean water and
how this might affect humans?
Answers
how is the exact same mesosaurusfossils ended up on both the South American plate and the African plate?
Answers
Answer:
The fossils gradually drifted apart over a long period of time
Explanation:
Although a single human was not able to witness it since the earth's plates shift slowly, the fossils eventually seperated over the course of tens of millions of years.
4. Which layer of Earth is broken into the tectonic plates? This layer is made of the crust and the
uppermost part of the mantle.
Answers
Why? The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth.
Mitosis maintains complex organisms by which of the following processes?
A) the removal of waste from the body
B) the exchange of gas with the environment
C) the formation of sperm and egg
D) the healing of a cut after an injury
Answers
Answer:
In multicellular organisms, individual cells grow and then divide via a process called mitosis, thereby allowing the organism to grow. ... Cellular division and differentiation produce and maintain a complex organism, composed of systems of tissues and organs that work together to meet the needs of the whole organism.
Explanation:
Is density useful in identifying unknown substances?
Answers
Answer:
Yes
Explanation:
You can identify an unknown substance by measuring its density and comparing your result to a list of known densities.
Density = mass/volume
When you divide the mass by the volume and compare the density to a list of known densities.
Studying the differences between fossils and modern organisms help scientists better understand the
Answers
All planets rotate counterclockwise except one. Which planet rotates clockwise?
Mars
Venus
Earth
Mercury
Answers
Answer:
venus is the only planet that relates opposite to the direction of all other planets
Adapting to Life at Sea: Take a look at this article from Natural History Magazine. Explain the connection between sea snake's diet, the way in which they eliminate nitrogenous waste, and their need for freshwater. Then explain why this makes life (in at least one way) difficult for them in the ocean.
Answers
Answer:
They needs fresh water for drinking purpose.
Explanation:
The Sea snakes favorite food is fish and crustaceans. These sea snakes removes nitrogenous waste in the form of ammonia. They can live in salty water but needs fresh water for drinking purpose. This makes life difficult for sea snakes in the ocean because sea snakes needs fresh water to become hydrated and the sea water is salty which they can't drink so they depends on the rainfall for drinking purpose.
The sea snakes excrete their nitrogenous wastes via cloaca and some of it from the skin.
Sea snake
The snake excretes solid as well as liquid wastes from the cloaca but sometimes the flow of excreta gets disturbed due to change in the osmolarity between the environment and the body. The oceanic water is saline which is responsible for changing the osmolarity.This is making their survival difficult in the ocean.
Learn more about excretion:
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2. Isabel went in her friend's garden. This garden was full of flowering plants. She
enjoyed looking at them. She wonders why rose and bougainvillea plants were not
planted inside the fence. What structures protect them from predators?
A. their leaves are poisonous
B. they have unpleasant smell
C. they have sharp leaf blades
D. their stems have thorns that protect them
Answers
Answer:
Option D is the correct answer
Their stems have thorns and protect them
Which statement correctly identifies structures 1 and 2
in the diagram?
A. Structure 1 is an unstable atom that turns into
structure 2, a new atom.
B. Structure 1 is a stable element that breaks down into structure 2, an unstable element.
C. Structure 1 is a radioactive element that loses particles to create structure 2, released energy.
D. Structure 1 is a radioactive atom that decays into
structure 2, half of the original unstable element.
Answers
Answer:
A
Explanation:
Took the test :)
Answer: a.
Explanation:
The answer is 588m^2
Answers
Answer:
ok
Explanation:
anyone good at biology need really help on this will be marked brainliest
Answers
Answer:
400X (10 x 40 = 400).
Explanation:
:)
Answer:
Should be 400x
Explanation:
Just take the power of the objective (40x) and multiply by the power of the eyepiece, usually 10X.
Organisms of a single species that share the same geographic location at the same time make up a _____________
Answers
Answer:
population
Explanation:
In photosynthesis, chlorophyll traps _____.
Answers
Answer:
In photosynthesis, chlorophyll absorbs energy to transform carbon dioxide and water into carbohydrates and oxygen. Chlorophyll is a molecule that traps light. Good luck :)
Explanation:
If half of the sons are colorblind, what is the genotype of the mothe?
Answers
Answer:
not colorblind
Explanation:
hope it helps
When will an atom give up electrons?
When more than half of the outer energy level is filled
When the n=2 level is full
When less than half of the outer energy level is filled
When the outer energy level is full
Answers
Atoms give up electrons when less than half of the outer energy level is filled, forming positively charged ions. Noble gases with a full outer shell do not easily give up or accept electrons.
An atom will give up electrons when less than half of the outer energy level is filled. In chemistry, valence electrons are electrons in the outermost shell or energy level of an atom. Atoms tend to gain or lose electrons when the valence electron shells are not filled. When atoms lose their valence electrons, they become positively charged ions. An ion is a positively or negatively charged atom or group of atoms. For instance, sodium atoms give away one electron to form sodium ions with a positive charge because the outermost shell of sodium has only one electron, which is less than half the number needed to fill the shell entirely. When more than half of the outer energy level is filled, atoms are reluctant to give up their valence electrons, which is why noble gases do not form chemical bonds easily. When the outermost shell of an atom is full, it is stable, which is why noble gases do not give up or accept electrons quickly. Therefore, an atom will give up electrons when less than half of the outer energy level is filled.For more questions on electrons
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What is Global Warming? Increasing temperature in Earth's atmosphere. ооо Decreasing temperature in a city Increasing rain rates in Earth. O Decreasing temperature rates.
Answers
Answer:
Increasing tempeeature in earths atmosphere
(3) (b) The mean concentration of red blood cells in an adult is 5.5 × 106 cells per mm3 1 mm3 = 0.000001 dm3 Calculate the mean number of red blood cells in 1 dm3 Give your answer in standard form.
Answers
Answer:
The correct answer is - 5.5*10^12 cells per dm^3
Explanation:
Given:
The mean concentration of red blood cells in an adult = 5.5 × 10^6
or = 5500 000
1 mm3 = 0.000001 dm^3
Solution:
Then, 1 dm^3 = 1000000 mm^3
(55000000 × 1000000) = 5500,000,000,000
= 5.5 × 10^12
Which fossil fuel puts the least amount of sulphur dioxide into the atmosphere?
a
Petroleum
b
Linoleum
C
Coal
d
Natural Gas
Answers
Answer:
b.Linoleum
Explanation:
hope that helps
Please answer! I'll mark brainliest if it's correct!
Aleveoli are most similar to:
A) Large Balloons
B) Little Pouches
C) Little Bottles
D) Blood Vessels
Also, PLEASE include a brief description of why you chose that answer, thanks so much!
Answers
Answer:
little pouches
Explanation:
the aleveoli are like small balloons, but not large ones. they exchange oxygen and carbon dioxide molecules (so they contain small amounts of air like a SMALL balloon, or in this situation a small pouch).
If homeostasis is not maintained, what will most likely happen to the digestive system?
Answers
°ω° please help, giving brainliest °ω°
Answers
Answer:
D.) Environment was hot and dry.
Explanation:
The question says "found in texas"
Texas is not:
coldwarm and wetfloodedwhat is light please tell me
Answers
light is a form of energy which gives us the sensation of vision.
hope
this
helps
Answer:
light is light i think or its probably chicken
Explanation:
What’s metabolism?? Help meh
Answers
An organism that is convenient for the research on a particular topic is called( ) in biology
a: model organism
b: super organism
c: chosen organism
d: best organism
Answers
Answer:
A Model Organism
Explanation:
A model organism is a non-human species that is extensively studied to understand particular biological phenomena
PLZ ANSWER!!! I NEED HELP LIKE ASAP!!!
Answers
Answer:
I believe the answer is B
Explanation: