Answer:
C. have specific jobs
Explanation:
If an organism has specialized cells, then the cells performs specific jobs.
A group of cells that performs a specific job is called tissues.
In higher organisms, cells are specialized for specific purposes in them. This is to ensure that cells are optimized to carry out certain functions. Specialization of cells usually occurs by cellular differentiation when an organism begins to form.The rows in the periodic table are called periods.
What is true about elements in the same period?
A. They have the same atomic mass.
B. Their magnetism increases in strength from left to right.
C. Their atomic numbers increase by 1 from left to right.
D. They have similar chemical properties.
Answer: C
Explanation:
why do you think you can find silver and gold on their own in rocks but calcium and magnesium are combined with other elements to make compounds such as calcium carbonate and magnesium sulfate?
Explanation:
Silver and Gold belong to a special group of metals known as the native metals. They are found naturally on their own and not in combined form in rocks.
These metals are found uncombined because they are unreactive. They prefer to alloy with themselves. Calcium and magnesium on the other hand are reactive metals. The unreactivity of these metals makes them uncombined in nature.ihsusbydnuhzkuhd nuziw
Choose the statement that is NOT true.
Hundreds of stars with planets have been confirmed using the radial velocity method and the transit method.
The first Earth-size planets ever found outside the solar system were discovered in 2012 by the Kepler Mission team.
Planets orbiting stars in the "habitable zone" are likely to have life existing on them.
More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.
Answer:
More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.
Explanation:
This is False so this would be your Answer
Answer: planets orbiting stars in the habitabke zone are likely to have life existinv on them
Explanation:
because it is false and i took the quiz
Hypothesize what would happen if most of the world's phytoplankton and seaweed disappeared? HURRY I NEED THIS NOWWWW PLEASE.
Answer:
Possible rapid deterioration of natural habitats where phytoplankton and seaweed exist.
Explanation:
Certain basic building blocks are needed for nautical environments to thrive. Assuming, in this context, without most of a certain type of oceanic species, the remaining habitats will suffer.
A runner eats a snack with 375 Calories of nutritional energy. After her snack, she burns 3.16 x 10^6 joules while running
Answer:
The complete question is given below
A runner eats a snack with 375 Calories of nutritional energy. After her snack, she uses 3.16 X 106 joules while running [1 Calorie = 4184 joules).
Which of the following statements are true? Select all that apply.
A. There were 1.57 X 106 joules of energy in the snack.
B. There were 3.14 X 106 joules of energy in the snack.
C. During her run, she used 755 Calories of energy.
D. During her run, she used 189 Calories of energy.
E. The runner used more Calories while running than she consumed during her snack.
F The runner used fewer Calories while running than she consumed during her snack.
Answer: Options A, C and E are all correct options
Explanation:
From the question,
1 calorie = 4184 Joules
therefore 375 calories from the consumed snack
= (4184 x 375) J
= 1,569,000J
= 1.56 x 10⁶ J (option A is correct)
While running, she expends 3.16 x 10⁶ J. We can convert this to calories to see how much calories she expended while running
Recall 4184 Joules = 1 calorie
therefore, 3.16 x 10⁶ Joules is equivalent to
= (3.16 x10⁶/ 4184) calories
= 755.6 calories (option C is also correct)
If she consumes 375 calories from her snack but expended 755 calories during her running exercise, therefore the runner consumed fewer calories than what she expended during her exercise, hence option E is also correct
Answer: Options A, C and E are all correct options
"Can you get tan from a campfire?".
Answer: You could if you had a special fire letting out UV light, but if not, you'd probably get burned first.
Explanation:
Fire does emit UV, which causes tanning, but it also emits a lot of other wavelengths, including infrared which is primarily responsible for heating. If you build a really big fire, one that would emit enough UV to tan, it would also emit a huge amount of infrared which will burn you sooner than you getting a tan.
No, you cannot get a tan from a campfire. A tan is a result of exposure to ultraviolet (UV) radiation, specifically UVB rays, which are primarily emitted by the sun. UVB rays penetrate the skin and stimulate the production of melanin, a pigment that darkens the skin as a protective response.
A campfire does not emit significant amounts of UV radiation. The light emitted by a campfire is primarily in the visible spectrum, which does not have the same wavelength as UVB rays. Therefore, sitting near a campfire will not provide the necessary UV radiation to induce tanning.
Campfires can emit infrared radiation, which can generate heat and potentially cause burns or damage to the skin if one is too close for an extended period.
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how many electrons are in the second ring of sodium
Answer:
there are eight electrons
Fossils of sea creatures have been found near the top of Mount Everest (8848m above the sea level). How do you think they could have got there?
Answer:
Continental Drift
Explanation:
The fossils of sea creatures could have reached the top of Mount Everest due to the continental drift theory suggested by geophysicist, Alfred Wegener. To exaggerate, a piece of evidence that supports Wegener’s hypothesis towards a continental drift is the fact that fossils of sea creatures can’t just end up in any random place like Mount Everest. He suggests that there must be something behind this and gradually it led to his well-known theory. His hypothesis towards a continental drift suggests that his second observation was that fossils of the same prehistoric species were found in different continents that were way apart. There was just no way that all the organisms could cross the oceans and reach all of these places.
Which temperature is the warmest?
290K
75 F
30 C
Answer:
What the heck is "K" but I beleive 75 is the answer, but maybe wait for sumone else to answer.
Explanation:
Answer:
30 C
Explanation:
QUESTION WITH ANSWER...
Which system is used to measure physical properties? Most scientists use the (BLANK) system, also known as the metric system, to measure physical properties of elements.
THE ANSWER IS: Standard International system
Standard International system is a system is used to measure physical properties.
Which system is used to measure physical properties?
The International System of Units (SI), is commonly known as the metric system. This system is used as the international standard for measurement. Most scientists use the International System of Units which is also known as the metric system in order to measure physical properties of elements. The metric system is a system of measurement that uses meter as base units of length (distance), liter for volume, and , and gram for weight or mass. We use units that are derived from the metric units in order to measure smaller or larger quantities.
So we can conclude that Standard International system is a system is used to measure physical properties.
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Tell why someone should visit this planet neptune, what they might be able to see or do, what they will
remember most about their visit, etc. You might want to include things they would need to be
careful of, what clothes, equipment, etc. to bring. Remember, your goal is to persuade
travelers to visit your planet because it’s the “Number One Travel Destination in our Solar
System.” (1 paragraph min.)
Which atom is a carbon atom?
A
B
C
What is the name of the following atoms?
An atom with 3 protons and 4 neutrons what is the name?
Answer:
an atom with 3 protons and 4 neutrons is a lithium atom
The atomic weight of magnesium is 24.What does that mean?
Answer:
because a 24Mg atom has 12 neutrons in its nucleus
confusin helppppppppp????
Answer:
d. an acid is the answer
The density of mercury is 13.6 g/ml. What is the volume of 386g of mercury?
The density of mercury is 13.6g/lmL. The volume of a 200 gram sample of mercury will be :
Volume=
200g/13.6g/mL
Volume=14.7mL
Therefore the correct option will be E
please help me
Read the passage and examine the photos. Then, suggest two reasons that scientists think developing pollen grains made vascular plants the most successful plants that live on land.
Passage
These mosses are nonvascular plants that grow closely packed together in moist places. The sperm they produce for sexual reproduction must swim to a nearby plant that has an egg that the sperm may fertilize.
Seed plants, such as these conifers, are vascular plants that live in both moist and dry places. For sexual reproduction, conifers produce pollen grains that contain sperm that cannot swim. Conifers produce massive amounts of pollen grains that can be carried by wind.
Answer:
Vascular plants are successful due to better transportation for water, nutrients and reproduction.
Explanation:
I got it right at school and hope this helps you learn to STUDY.jk
According to scientists, the evolution of pollinators made vascular plants the most successful land plants for two major reasons:
Sperm can be more effectively and widely distributed for sexual reproduction, thanks to pollen grains.Vascular plants can reproduce without the need for a moist environment because they can make pollen grains.What are Pollen grains?Plants with seeds, including flowering plants and conifers, produce pollen grains as a component of their reproductive process. They are often carried by wind or pollinators, such as bees, to the female reproductive organs of the same or different plant species, where they can fertilize female gametes (egg cells) and begin the development of seeds.
They carry the male gametes (sperm cells) of the plant. Many plant species depend on pollen grains for successful reproduction, and these grains have evolved a variety of forms, sizes, and surface features that make them easier to disperse and be recognized by pollinators.
Therefore, according to scientists, the evolution of pollinators made vascular plants the most successful land plants for two major reasons:
Sperm can be more effectively and widely distributed for sexual reproduction, thanks to pollen grains.Vascular plants can reproduce without the need for a moist environment because they can make pollen grains.Learn more about Pollen grains, here:
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what is electron shielding?
Answer:
Electron shielding is when the inner electrons shield the outer electrons from the full force of the nucleus
what is atoms of the same element with varying numbers of neutrons
PLEASE HELP WILL GIVE BRAINLIEST AND 30 POINTS
Answer:
We refer to the atoms of the same element with different numbers of neutrons as "isotopes". While the particular isotope involved does not affect how an atom will react chemically, it does determine how the atom will behave in nuclear reactions.
Explanation:
Answer:
The # of neutrons equal the number of electrons and protons.
Explanation:
Look what I wrote above.
Determine the pressure of a 6.4L sample of oxygen gas at 300K and 100KPa, after the gas is compressed to 2.40L at 900K.
The pressure : 800 kPa
Further explanationBoyle's law and Gay Lussac's law
[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]
P1 = initial gas pressure (N/m² or Pa)
V1 = initial gas volume (m³)
P2 = gas end pressure
V2 = the final volume of gas
T1 = initial gas temperature (K)
T2 = gas end temperature
The pressure after the gas is compressed :
[tex]\tt \dfrac{100\times 6.4}{300}=\dfrac{P_2\times 2.4}{900}\\\\P_2=800~KPa[/tex]
You're cooking, and you accidentally grab a metal spoon without a hot pad. What type of heat transfer is responsible for the burn on your hand
Answer:
Conduction
Explanation:
How many protons does Royalty, R-13, have?
Royalty is element #6.
O 13
07
06
O 19
Brain’s family has a compost pile at home they need to put all the weeds the pull up from the garden in it as well as any vegetable waster they gather from the kitchen if they keep it moist all this vegetation will eventually turn into organic soil by the chemical process of decay since decay involves a variety of chemical reactions
Answer: b. It would happen faster at warmer air temperatures
Explanation:saw another site say this was the answer
I WILL MARK BRAINLIEST!!!!! !!
(picture included with one question ^^^^^^^)
Answer:
type D
balance form .b
Explanation:
the following body systems is responsible for releasing waste?
Answer:
the urinary system??
Explanation:
Tendency of an object to float
Answer:
Buoyancy is the ability or tendency of an object to float in a fluid: a liquid or a gas. This happens because fluid pressure increases with depth. According to Archimedes' Principle, the buoyant force on a submerged object is equal to the weight of the liquid displaced by the object.
Explanation:
Plate movement is thought to be the result of what
Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.
Hope this helps
a snail slowly moves along at 3 ft/hr. what type motion velocity ,distance, speed acceleration displacement Please answer need it now!!!!!
Answer:
motion - forward
velocity - 3ft/hr
distance - 3 ft/hr
speed - 3 ft/hr
acceleration - none
displacement - ?????
Explanation:
A given mass of gas in a rigid container is heated from 100 °C to 300 °C. Which of the following best describes what will happen to the pressure of the gas? The pressure will
Taking into account the Gay-Lussac's Law, the pressure will increase by a factor less than three.
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions against the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In summary, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
Mathematically, Gay-Lussac's law indicates that the ratio of pressure to temperature is constant:
[tex]\frac{P}{T} =k[/tex]
Studying two different states, an initial state 1 and a final state 2, it is satisfied:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case, a given mass of gas in a rigid container is heated from 100 ° C to 300 ° C, that is, it is heated from 373 ° K to 573 ° K. This indicates that the temperature is increasing by a factor less than three. Since pressure is directly proportional to temperature, pressure must increase in the same proportion.
Finally, the pressure will increase by a factor less than three.
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https://brainly.com/question/4147359?referrer=searchResultswhich statement is a scientific law
Answer:
It is b
Explanation: