Answer:
The main significance of reproduction is to maintain continuity of species. It also helps in studying evolution as sexual reproduction results in variation among the species.A ball is thrown upward as shown. Gravity pulls (accelerates) the ball back down. Which of the following statements is true?
Velocity and acceleration are both positive.
Velocity is negative and acceleration is positive.
Velocity is positive and acceleration is negative.
Velocity and acceleration are both negative.
Answer:
I think third one is the right answer
Explanation:
if it is right please mark me as brainliest
Answer:velocity is positive
acceleration negative?
Explanation:
Which organelle acts as a temporary storage center, containing water,
waste, and other products?
A. cell membrane
B. cytoplasm
C. vacuole
D. nucleus
Answer:
pretty sure it is vacuole
Explanation:
...
What is the correct order of biological levels of organization, from the most complex (largest) to least complex (smallest)?
Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Explanation:
.
Which element below has properties of both metals and non metals ?
Answer:
I need more information.
Explanation:
Answer:
The answer is metalloids.
The metalloids are a unique group of elements that share properties of both metals and nonmetals. They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals.
Hope this helps, have a great day/night, and stay safe!
I need help it’s due in a couple minutes !
Answer:
chemical composition
Electromagnetic waves used in broadcasting are called?
A sample of xenon gas occupies 1.90L at 251 kPa and -18°C. What was the temperature of the xenon if the gas originally measured 1.65 L at 205 kPa?
The temperature of the xenon : 180.863 K
Further explanationCombined with Boyle'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 = final gas pressure
V2 = finalgas volume
T1 = initial gas temperature (K)
T2 = final gas temperature
P1=251 kPa
T1=-18+273=255 K
V1=1.9 L
P2=205 kPa
V2=1.65 L
[tex]\tt \dfrac{251\times 1.9}{255}=\dfrac{205\times 1.65}{T_2}\\\\T_2=\dfrac{205\times 1.65\times 255}{251\times 1.9}=180.863~K[/tex]
can Someone help me with the formula
Answer:
zince hypohlorite
Explanation:
Answer:
Zince Hypohlorite
Which is a fungus that lives together with a certain algae or bacteria?
spore
hyphae
lichen
fruiting body
lichen because it lives with the bacteria
Density of water is 1 g/ml. If a piece of wood with a density of 5 g/ml is
placed in a tub of water, will it sink or float? Explain.
Answer:
The piece of wood will sink
Explanation:
If an object has a density higher than water, it will sink, and the piece of wood is more dense than water when measured.
Based on what you know about the daughter cells that form by mitosis and meiosis, how do you think the offspring of asexually and sexually reproducing organisms compare to their parents? Justify your answer.
Answer:
well u see the offspring of asexual production will be identical to the parent because it only needs 1 parent where as sexual production requires 2 parents so it would look like both parents
what is the oxidation state of calcium
0
Rule 1 states that the oxidation numbers of an atom in an element is always 0, so the oxidation number for Ca in the metal and O in O2 have oxidation numbers of zero
hope this helped :)
What Happens When extra Solute is added to unsaturated ,saturated and supersaturated solution
Answer:
If More solute is added and it does not dissolve,then the original solution was saturated. if the added solute dissolves,then the original solution was unsaturated. A solution that has been allowed to reach equilibrium but which has extra undissolved solute at the bottom of the container must be saturated.
can someone help me please
First response
Answer:
102°C is equal to
375.15 kelvin
Formula:
102°C + 273.15 = 375.15K
Therefore! your answer would be the third option
Answer:
375.15
Explanation:
102°C+273.15=375.15K
Hope I helped!
INFER if the total mass of the products in a reaction is 90 grams,
what was the total mass of the reactants?
Answer:
90 grams. Input mass = output mass
Explanation:
Balanced Equation for C3H8
Answer:
The balanced chemical equation for the combustion of propane is: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g).
hope it helps :)
A sample of helium gas at a pressure of 0.538 atm and a temperature of 256 °C, occupies a volume of 437 mL. If the gas is cooled at constant pressure until its volume is 316 mL, the temperature of the gas sample will be
Answer:
110 °C
Explanation:
The following data were obtained from the question:
Initial pressure (P1) = 0.538 atm
Initial temperature (T1) = 256 °C
Initial volume (V1) = 437 mL.
Final pressure (P2) = constant = 0.538 atm
Final volume (V2) = 316 mL
Final temperature (T2) =?
Next we shall convert 256 °C to Kelvin temperature. This Can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T1) = 256 °C
Initial temperature (T1) = 256 °C + 273 = 529 K
Next, we shall determine the new temperature of the gas as illustrated below:
Pressure = constant
Initial temperature (T1) = 529 K
Initial volume (V1) = 437 mL.
Final volume (V2) = 316 mL
Final temperature (T2) =?
Applying the Charles' law equation, we have:
V1 /T1 = V2 /T2
437/529 = 316/T2
Cross multiply
437 × T2 = 529 × 316
437 × T2 = 167164
Divide both side by 437
T2 = 167164 / 437
T2 = 382.5 ≈ 383 K
Finally, we shall convert 383 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 383 K
T(°C) = 383 – 273
T(°C) = 110 °C
Therefore, the new temperature of the gas is 110 °C
Verbal expressions, body language, and facial expressions are all __________ components of emotion.
A.
psychological
B.
physiological
C.
cognitive
D.
behavioral
Please select the best answer from the choices provided
Answer:
D
I just got it right
Answer:
D
Explanation:
On edge
In all organisms, energy is stored in molecules called:
A. mitochondria
B. heat
C. glucose
D. ATP
Answer:
It is the D. Atp
Explanation:
Have a good day
Brian's family has a compost pile at home. They put all the weeds they pull up from the garden in it as well as any vegetable waste 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, how might temperature affect the rate at which the compost turns into sol?
Temperatures near freezing would make it speed up.
It would happen faster at warmer air temperatures.
Changing temperatures would not affect the chemical reactions.
Warm summer air temperatures would make it slow down.
Answer:
Option - It would happen faster at warmer air temperatures
Explanation:
The chemical process of converting organic matter such as plants, litter into organic soil, or organic compost called decomposition and perform by decomposers such as fungus or bacteria.
Like all other living organisms, decomposers also live in an optimal range of temperature. The major decomposers normally lie in the range of 30 to 40-degree celsius. Any type of fluctuation in this range might slow down the reaction of decomposition.
What can cause the pH of water to be either to basic or to acidic
But pH is quite an important measurement of water. Maybe for a science project in school you took the pH of water samples in a chemistry class ... and here at the U.S. Geological Survey we take a pH measurement whenever water is studied. Not only does the pH of a stream affect organisms living in the water, a changing pH in a stream can be an indicator of increasing pollution or some other environmental factor
What is the state of matter of neon at -247°C?
Answer:atomic number 10 noble gas
Explanation:
When ice cubes cause weathering, what type of weathering is it called?
Answer:
Chemical Weathering
Explanation:
Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals. These minerals are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.
- Weathering | CK-12 Foundation
The more electronegative atom in a covalent bond will: * 1 point become an anion become a cation have a partial positive charge have a partial negative charge
Answer:
The correct option is have a partial negative charge
Explanation:
Since electronegativity can be described as the measure of the tendency of atom to attract electrons towards itself, the more electronegative atom in a covalent bond will have a partial negative charge. This is because, in covalent bond, there is sharing of electrons between participating atoms, the atom that has a higher electronegativity tends to attract the shared electrons towards itself making it slightly negative charge.
NOTE: The negative charge is partial and thus is not represented while drawing a covalent bonding diagram as this could be misinterpreted to mean an electrovalent bond if the charge is indicated.
I need help please 18 points.
HELP!!!!!!! THIS NEEDS TO BE DONE BY TODAY!!!!
Answer:I think it is A or C
Explanation:
what is the charge on copper in CuSO4?
A car is traveling down the street
in direction A. Which of the forces
shown in the figure above would
affect ONLY the speed of the car?
Answer:
Options pls
Explanation:
The table below describes two parts of living cells.
WHO EVER ANSWERS IT I WILL GIVE BRAINIEST!!
Parts of Living Cells
Plant cell Animal cell
Part A Present Present
Part B Present Absent
Which of the following is most likely correct? (1 point)
a
Part A is vacuole, Part B is nucleus
b
Part A is mitochondria, Part B is cell wall
c
Part A is cell wall, Part B is cell membrane
d
Part A is chloroplast, Part B is mitochondria
Answer: membrane and cell wall
Explanation: this is because the cell wall is only known to happen in plant cells and a membrane is in both plant and animal cells so it is most likely membrane and cell wall.
Answer:
C
Explanation:
As you move down the periodic table the atomic radius gets bigger. This is because __