Answer: The early Earth had no ozone layer and was probably very hot. The early Earth also had no free oxygen. Without an oxygen atmosphere very few things could live on Earth. Anaerobic bacteria were probably the first living things on Earth.
Can you please help me?!❤️
Answer:
A. Strainer
Explanation:
A strainer is, amongst other things, something used to wash foods like fruits, vegetables, &tc and rinse out certain foods, like rice.
What happens when you put something through a strainer? When you wash something with it, the dirt goes through but not the food, like in the image, right?
Have a great day!
Anyone know what is the answer pls ?
Answer:
1. Viruses 2. ? 3. Viruses 4. ? 5. Immunity 6. Vaccine
Explanation:
Discarded materials other than fluids from natural, municipal, agricultural, and industrial sources are called __________.
A)
hazardous waste
B)
air pollutants
C)
particulates
D)
medical waste
E)
solid waste
the answer is solid waste
I hope it helps you
Answer:
B
Explanation:
Most of these industrial age resources that they emit are often called air pollutants
Kerstin is getting ready to graduate high school. She wants to become a cardiac perfusionist. Which best describes the path she should take to her career?
Answer:
four-year degree , master’s degree , certification exam from ABCP
Explanation:
Answer:
She should do a four-year degree , master’s degree , certification exam from ABCP
Explanation:
PLEASE HELP WILL MARK THE BEST!!!!
Answer:
#3#5#7
Explanation:
hopes this helps
how are organisms impacted by the changing landscape
Answer:
Animals can be impacted in a variety of ways, one example being that humans continue to expand their territory they are taking homes and resources to organisms that inhabit that land, this can lead to population decreases as the organism will be forced into a new environment that they are not adapted to.
Four differences between viruses and bacteria
Answer:
bacteria :
1. need microscope to see them.
2. need warmth moisture nutrients.
3. saprophyte or parasite.
4. can be harmful or useful.
viruses:
1. smaller than bacteria.
2. spend on living host.
3. always parasite.
4. where is harmful.
Which of these has a warming effect on Earth? O A. More evaporation of water due to warmer temperatures causes low, thick clouds to form. O B. More evaporation of water due to warmer temperatures increases water vapor, forming high, thin clouds. C. Earth's oceans absorb carbon dioxide from the atmosphere D. Rising carbon dioxide levels spur plant growth, causing increased carbon dioxide absorption.
Answer:
A
Explanation:
Thick clouds can trap lots of heat. This has a warming effect on earth.
Answer:
B.. More evaporation due to warmer temperatures increases water vapor, forming high, thin clouds
Explanation:
Thin clouds don't reflect as much sunlight as low, thick clouds do. Because of that more sunlight enters the atmosphere and increases global warming
identify one organism from each of the six periods of the paleozoic era
Answer:
The Paleozoic is divided into six periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous (in the U.S., this is divided into the Mississippian and Pennsylvanian Periods), and Permian. Most of these names derive from locations where rocks of these ages were first studied.
i hope this was helpful
how does the cell work
Which factor is needed for both thunderstorms and hurricanes to form?
Answer:
C. rising moist air
Explanation:
for the storm to start/process it needs the moist air in order for both hurricanes and thunderstorms to happen, because the rotation with the moistness creates the storms.
Hope this helps
Answer:
rising, moist air
Explanation:
because it is i got it right on my test
regular reflection is the ________reflection of light on a(n)_________surface.
Answer:
1. parallel ,2. smooth
Explanation:
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What effect does the deer's behavior have on the survival and reproduction of these two
types of cactus?
PLS HELP
Answer:
Greatly affected.
Explanation:
The deer's behavior has greatly affected the survival and reproduction of these two types of cactus because one cactus is eaten by deer while the other is saved from it. The cactus with no spines are eaten by deer which destroy the vegetative as well as reproductive parts of cactus so its survival and reproduction does not occur whereas the other cactus have spines on its body is save from deer and increase in the chances of survival and reproduction occur.
Which organisms are producers?
A.cactus and insect
B.cactus and lizard
C.cactus and sage bush
D.sage bush and lizard
What is the process by which an organism undergoes a dramatic change in form called?
1. Morphology
2. Metastasis
3. Photosynthesis
4. Metamorphosis
Metamorphosis through which the insect develops by four distinct stages: egg, larva, pupa, adult. A type of metamorphosis in which an organism's transformation is so dramatic that it is difficult to recognize the relationship between the larva and adult form.
Option 4) Metamorphosis
Answer:
4. Metamorphosis
Neurons that respond to specific types of lines are examples of:
A. figure detectors.
B. top-down processors.
C. feature detectors.
D. figure processors.
Answer:
C
Explanation:
Neurons that respond to certain types of lines are examples of feature detectors found in Option C. Neurons are the monomeric units of the nervous system that play an important role in transmission.
What is the importance of the neuron?
The neuron is a unit in which the message is transmitted from the neuron to another neuron, and this can be done by either chemical signaling or by electric signaling. The neuron receives sensory stimuli from the sensory organ and transmits them to the spinal cord.
Later, the message from the spinal cord is sent to the motor organs, and the whole pathway of the neuron signaling from the sensory to the motor organ is called the reflex arc. The neuron takes part in the signaling process so that the muscle can function, regulate the contraction relaxation, and perform many other functions.
Hence, neurons that respond to certain types of lines are examples of feature detectors found in Option C.
Learn more about the neuron here.
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Where a stream leaves a mountain range youll find an?
what is the difference between the calorie (lowercase c) and the Calorie (capital C)
Pls it’s a drag and drop
Answer:
Explanation:
photosynthesis =
uses carbon+water
requires chlorophyll
produces food for the plant
converts food to usable energy
Respiration=
uses oxygen
releases carbon into the air
Transpiration= pulls water up from the roots to the leaves
important part of the water cycle
returns water to the air
ANYONE KNOW THIS?? PLZ LMK ASAP!!
Answer:
assuming this is human it is 46
Explanation:
what is insomnia ?...
Answer:
sahi bol rahi hai ye ladki
Explanation:
I also think ,u lack ur sleep
Answer:
Insomnia is a common sleep disorder that can make it hard to fall asleep, hard to stay asleep, or cause you to wake up too early and not be able to get back to sleep.
Explanation:
The majority of cellular respiration takes place in the nucleus of cells
Answer:
fALSE
it is in the mitochondria
Explanation:
Type Newton's Second Law of Motion as it is written.
Answer:
I hope you understand please give brainliest
Explanation:
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Answer:
Yes it is written that second law of Newton is motion of an object
Why would so many earthquakes originate along the slab of lithosphere that is descending into the mantle?
Answer:
As the slab descends into the mantle, rheology changes cause the plate to bend and deform, and generates these earthquakes. The trend of such events can be seen in cross-sections of subduction zones
Explanation:
how are yarns made up of?
Answer:
Yarn is a strand composed of fibres, filaments (individual fibres of extreme length),... Yarns are made from both natural and synthetic fibre, in filament or staple form. Filament is fibre of great length, including the natural fibre silk and the synthetic fibres.
Answer:
cotton you can get cotton from sheep
Which explanation best identifies the relationship between mitosis and
reproduction? *
A.Mitosis is a form of sexual reproduction because the daughter cells form from one
single parent cell.
B.Mitosis is a form of sexual reproduction because the daughter cells are genetically
different from the parent cell.
C.Mitosis is a form of asexual reproduction because the daughter cells form a new
nuclear membrane after reproduction.
D.Mitosis is a form of asexual reproduction because the daughter cells are genetically
identical to the parent cell.
Answer:
D.
Explanation:
Mitosis three main functions are growth and repair of cells, and asexual reproduction for the single celled organisms.
The daughter cells have same chromosomes/genetics.
Example: repair and growth of skin, red blood cells etc.
Answer:
It's D
Explanation:
why is it important to avoid planting the same crop in the same field year after year
what are some products that come from plants?
Answer:
Aspirin tablets. Sponges. ...
Sponges made from trees. Chewing Gum. ...
Sapodilla tree. Carnauba Wax. ...
Copernicia prunifera. Henna Dye. ...
Henna tattoo. Rubber. ...
Tapping into trees for rubber.
Answer:
Rubber, sponges
Explanation:
these are Frome trees
A femur is a leg bone found in a human skeleton. When evaluating the human body's levels of organization, a femur is best classified as —
A.
an organ, because it is part of the skeletal system.
B.
an organ system, because it is composed of many cells.
C.
an organelle, because it is composed of many tissues.
D.
an organism, because it is part of the skeletal system.
Answer:
Option A
Explanation:
The femur is classified as an organ, because it is part of the skeletal system
The level of organization is the order that includes cells, tissues, organs, organ systems, and organisms. The femur is a leg bone which is an organ which is a part of organ system called the skeletal system.
What is skeletal system?The basic framework of body is skeletal system, which is consists of bones, connective tissue, tendons, ligaments, etc.
The four main parts of this system include:
Bone.Ligament.Tendon.Joint.The femur is a leg bone which is an organ that is a part of an organ system called the skeletal system.
Thus, the correct option is A.
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what do the arguments for and against the use of stem cells in medical research share?
Answer: Stem cell research can potentially help treat a range of medical problems. It could lead humanity closer to better treatment and possibly cure a number of diseases:
Parkinson’s Disease
Alzheimer’s Disease
Heart Diseases, Stroke and Diabetes (Type 1)
Birth Defects
Spinal Cord Injuries
Replace or Repair Damaged Organs
Reduced Risk of Transplantation (You could possibly get a copy of your own heart in a heart-transplantation in the future
Stem cells may play a major role in cancer
Better treatment of these diseases could also give significant social benefits for individuals and economic gains for society
Cons
"We should not mess with human life."
"Humans should not be trying to play God"
Some argue that stem cell research in the far future can lead to knowledge on how to clone humans. It is hard to say whether this is true, but we have seen devastating consequences of other research-programs, even with good intentions, such as nuclear research.
Stem cells are cells, which have the ability to transform into many different types of cells. The stems cells have the potential to specialize in any type.
The stem cells are extensively used for research, curing diseases, and especially in developing prosthetics. The stems cells provide new cells for the growth and development of the replaced and damaged cells.
The arguments for and against the use of stem cells are:
Arguments for the use of stem cells in medical research are:
1. The stem cells enhance the growth and development of healthy skin tissue.
2. The cells can be used to enhance the production of collagen.
3. The study of stem cells helps in understanding the causes of disease.
Arguments against the use of stem cells in medical research are:
1. The use of stem cells for research harms human life and dignity.
2. People believe that killing blastocysts or stem cells is equal to taking a human life.
3. However, the transplant of stem cells can be rejected by the patient's body, therefore, can cost the life of the patient.
Therefore, the use of stem cells for research can be fruitful or disadvantageous.
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