Answer:
Radiometric dating. Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. ... When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. Afterwards, they decay at a predictable rate.
Osmosis is important to cells because _______ *
a. cells contain fluids that are mostly water
b. cells are filled with fluids that are mostly sugar
c. cells need to be kept cool
d. cells need food
Blood vessels are connected to nerve fibers which are regulated by the
nervous system. When innervated they respond by doing what?
Answer:
When blood vessels are innervated they respond by contracting and relaxing their muscle wall, as a result of the activity of the autonomic nervous system.
Explanation:
The nerves that are responsible for the innervation of the blood vessels are called nervi vasorum, and are composed of nerve fibers of the sympathetic and parasympathetic nervous systems.
The innervation of the blood vessels specifically acts on the muscular wall of the vessel, so it contracts or relaxes depending on the activity of the nervous system:
Sympathetic nervous system stimulates vascular contraction.Parasympathetic nervous system makes the vascular smooth muscle relax.The action of the autonomic nervous system has an effect on blood pressure, being a determinant of normal or pathological behavior of the arteries.
How many chromosomes are present in human sex cells at the end of meiosis
Answer:
23
Explanation:
In the light independent reaction _____, ______, and ______ combine to make ______ and ______
Answer/Explanation:
In the light independent reaction carbon dioxide, ATP, and NADPH combine to make glucose and oxygen.
The purpose of the control is to ..?
Select the correct answer.
Which comet was seen in 2007 and had an astounding fan-shaped long tail spread across the sky?
ОА.
Lexell's comet
ОВ.
Lovejoy comet
OC. Shoemaker-Levy 9 comet
OD. McNaught comet
Reset
Next
Answer:
the right answer us Mcnaught comet
Answer:
Its Kirchs Comet
Explanation: i took the test.
what is a sedimentary rock
Answer:
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding. Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at the Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. Sedimentary rocks are made when sand, mud and pebbles get laid down in layers. Over time, these layers are squashed under more and more layers. Eventually, the layers are lithified – turned to rock. Sedimentary rocks can be formed in deserts, lakes, rivers and seas .
what is the function of the respiratory system?
1. to break down food.
2. to breathe.
3. to transport materials in the body.
4.to rid the body of waste.
please help me out!!
If these parents had 12 children how many are expected to have dimples
Answer:
6 to 4 it depends on how many family member they have you know what im saying if they have like say 100 family members some kids will have it
Explanation:
mark it brainly
What causes antibiotic resistance?
- Only using antibiotics when you are also doing radiation therapy
- Only using antibiotics when you are also doing chemotherapy
- Any use of antibiotics causes resistance
- We do not know
Answer:
Antibiotic resistance occurs when bacteria change in response to the use of these medicines. Bacteria, not humans or animals, become antibiotic-resistant. These bacteria may infect humans and animals, and the infections they cause are harder to treat than those caused by non-resistant bacteria.
your welcome ;)
Explanation:
Wyatt has heart problems
Answer:
who's that
Explanation:
Write down important details about the immune system
Answer:
lungs,heart, stomach, and livers
Explanation:
I thinks what an immune system is
Answer:
important details about the immune system : it protects organisms from diseases, it can be self-distructive, white cells make your immune system work , and sleepless night hurt your immune system
Explanation:
which nitrogen bases are pyrimidines
Thymine and Cytosine are pyrimidine nitrogen bases.
Answer:
Thymine and Cytosine
kareem drew a diagram to compare flatworms and segmented worms
which label belongs in the area marked X?
a. can reproduce sexually
b. are always parasites
c. are all sessile
d. are covered in setae
PLEASE HELP
Answer:
Explanation:
A - can reproduce sexually
HURRY I ONLY GOT 20 MINS!! 100 pints
Analyze the given diagram of carbon cycle below.
An image of carbon cycle is shown. The sun, a cloud, two trees, one on the left and the other on the right, an animal, lake, and a factory are shown in the image. An arrow is shown from the sun towards the left tree marked A. The sun is marked B. There is an arrow from the air above the clouds, marked C, towards the left tree. An arrow from a location close to the ground marked D points towards Dead Organisms, which is a label under the animal. An arrow marked E points from the right tree straight up to the clouds. An arrow marked F points from the animal straight up to the clouds. An arrow marked G points from the factory towards the air above the clouds, C. There is an arrow pointing from the air to the lake labeled Carbonates in Water, an arrow pointing down from dead organisms to Fossils and Fossil Fuels, and an arrow from Fossils to the factory.
Part 1: What is happening at location G?
Part 2: Which type of energy transformation is taking place at this location?
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Use complete sentences to explain your answer.
Answer:
This is too difficult to read and understand... if you had a diagram I could be able to help more, but I can't figure out exactly what your asking... all I know is part A is CO2 being released into the atmosphere...
Hope you have a great day and if you have a diagram let me know.. I'd love to help :D
Answer:
Part I
At location G, the process of combustion is taking place where hydrocarbon or organic carbon from the fossil fuel is burnt in the presence of oxygen to produce carbon dioxide and water as the products.
CxHy = CO₂ + H₂O
Part II
At point G there is no transformation of energy since during the process of combustion energy will still be stored in form of chemical energy in the bonds of carbon Iv oxide and the water produced during the reaction.
Part III
The process shows recycling of carbon in the carbon cycle. This is because carbon from living organisms is cycled to non living organisms. When plants and animals die and are buried deep in the ground, they are then slowly converted to fossil fuels which contain organic hydrocarbon compounds including petrol, kerosene and other compounds. Then the fossils are used in the industries and undergoes combustion releasing carbon iv oxide which is then released to the atmosphere and used by the plants and animals. The process starts once again.
DISCLAIMER:
THIS WORK AIN'T MINE
I got it from the same question that was answered.
The graph shows the effect of different wavelengths of ultraviolet light on mutation rate in
human skin cells. Which of the statements below supports the claim that UV radiation has an
effect on mutation rates? Select all that apply.
A)
Only UVA has an effect on mutation rates in human
skin cells.
B)
Only UVB has an effect on mutation rates in human
skin cells.
C)
Both UVA and UVB increase mutation rates in human
skin cells.
D)
A combination of UVA and UVB will increase the
mutation rate even more.
The independent variable is causing an effect on the
dependent variable in this experiment.
Answer: C and E
Explanation:
USA test prep
Answer:
C) Both UVA and UVB increase mutation rates in human skin cells.
E) The independent variable is causing an effect on the dependent variable in this experiment.
Explanation:
Got it right on USA Testprep
Explain how bacteria can be both harmful and helpful.
The species of bacteria that colonize our respiratory and digestive systems help set up checks and balances in the immune system. White blood cells police the body, looking for infections, but they also limit the amount of bacteria that grow there. Likewise, bacteria keep white blood cells from using too much force. Bacteria also help out by doing things cells are ill-equipped to do. For instance, bacteria break down carbohydrates (sugars) and toxins, and they help us absorb the fatty acids which cells need to grow. Bacteria help protect the cells in your intestines from invading pathogens and also promote repair of damaged tissue. Most importantly, by having good bacteria in your body, bad bacteria don’t get a chance to grow and cause disease.
Some species of bacteria in your body can result in diseases, such as cancer, diabetes, cardiovascular disease, and obesity. Usually, these diseases happen only when the normal microbiome is disrupted, but that can occur even from antibiotics. Antibiotics kill bacteria, and some of those will be good bacteria that we need to protect our health. When that happens, the bad bacteria that normally are kept in check have room to grow, creating an environment ripe for disease.
Bad bacteria can exist at low levels in your body without causing harm or can grow too much and wreak havoc. Staphylococcus aureus can cause something as simple as a pimple or as serious as pneumonia or toxic shock syndrome. P. gingivalis can cause gum disease, and was recently linked to pancreatic cancer (read our article find out more). Similarly, when not suppressed by good bacteria, Klebsiella pneumonia can cause colitis, and subsequently lead to colorectal cancer.
In addition to allowing disease-causing bacteria to flourish, the elimination of good bacteria throws the immune system out of whack. The result can be simple allergies or very debilitating autoimmune diseases. Without the right balance of bacteria, your body might suffer from constant inflammation.
Inflammation is the body’s alarm system, which calls white blood cells to heal a wound or to get rid of infection. Chronic inflammation, however, can make the body more susceptible to autoimmune diseases and cancer, such as causing inflammatory bowel disease which if uncontrolled can cause colon cancer.
Why is weather different from place to place?
Answer:
There are differences in climate around the world because of differing amounts of radiation received from the Sun at different parts of the Earth at different times of the year.
Explanation:
Hope this helps :)
Answer:
because according to where they are located, atmosphere brings different weather and temperature, and some places are further away from the sun, just like when it is day in one side but night on the other
Explanation:
⦁ In what stage of an animal’s life cycle do most cells differentiate?
Answer:
Reproduction
Explanation:
Answer:
Animals and plants produced by sexual reproduction begin life as a single cell, a fertilised egg or zygote . These cells must divide by mitosis to produce a multicellular organism.
have white or brown fur The allele for white furis recessive to the allele for brown for what's
individual with white fur?
Answer:
When a true-breeding black guinea pig is crossed to a white one, a) What fraction of the F1 offspring is expected to be heterozygous? answer: 100% ... 5) The absence of legs in mice has been attributed to a recessive allele. A normal.
Explanation:
What type of plate boundary lies between the Juan de Fuca plate and North American plates? (one word, all caps)
Answer:
Transform Plate
Explanation:
I hope that helps. I looked it up on the web
Answer:
TRANSFORM
Hope I helped you out.
(04.02 LC)
What is a genetically modified organism? (2 points)
Answer:
organism whose genetic material has been altered so do not have pure natural genome.
i neeed help plz asap
Answer:
C is definitely your answer
Which of the following best describes the cell below?
Capsule
Cell wall
Plasma membrane
Cytoplasm,
Ribosomes
Plasmid
P
Bacterial Hagellum
Nucleoid circular DNA)
OA
prokaryotic cell
OB
plant cell
OC.
protist cell
OD
eukaryotic cell
What is the basic unit - the building blocks – of all living things?
A Tissue
B Molecule
C Muscle
D Cell
Answer:
The cell of course
Explanation:
.......
Which of the following is true about protein molecules
4) After a horrible car wreck, Jamie had a broken ankle, a few minor cuts, scratches, and a
large bruise across her chest from the seatbelt. While at the hospital, they kept checking her left
lung because it kept collapsing.
What systems are affected?
Why?
Which of the following processes is directly controlled by the cell nucleus?
A.Protein synthesis because DNA in the nucleus contains the instructions for making Proteins
B.Osmosis because the nucleus has nuclear pores that allow water to move in and out.
C.Energy production because the nucleus contains mitochondria
D.Waste removal because a steady stream of molecules moves out of the nucleus
Answer:
f
Explanation:
Which is the source of energy, which drives the water cycle?
Answer:
it's the sun
Explanation:
the water cycle is driven primarily by the energy from the sun
Which antivenom will save Tyler?
Select one:
a.
Antivenom A
b.
Antivenom B
c.
Antivenom C
d.
Antivenom D
Answer:
b
Explanation: