Answer:
2
Explanation:
There are no zeros so the only numbers there are is 2 and 3. So two numbers equals two sig figs.
Which scientific investigation does not include dependent and independent variables?
Answer:
Observing and counting bird populations
Explanation:
Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music. Which component is missing from Carmen’s experiment?
Answer: control group
Explanation:
what is an environment
Answer:
the surroundings or conditions in which a person, animal, or plant lives or operates.
Explanation:
What color is blood while it’s in your body ?
Answer:
Red, shade of red may depend on the oxygen level in it.
Explanation:
Answer: Dark red for veins, bright red in artery
Explanation:
How is the cycling of matter and energy similar?
Answer: As matter cycles and energy flows through living systems and between living systems and the physical environment, matter and energy are conserved in each change. The carbon cycle provides an example of matter cycling and energy flow in ecosystems.
Explanation:
Difference between silkmoth and honeybee
Where and how is a star born?
Answer:
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
Explanation:
Answer:
Through sex and in the vagina
Explanation:
A company is building a new factory. The company wants to assure the community that the waste management process is ethical and legal. The community requested assurance that the process would be safe for both the community and the environment. Which biology-related professionals might be hired to help this company meet that goal?
Answer:c
Explanation:
The company might hire a toxicologist, an ecologist, and/or an environmental scientist to help assess the potential impact of the waste management process on the community and the environment.
Who is a toxicologist?Toxicologist is a professional who specializes in the study of the harmful effects of chemicals on living organisms and the environment. They use their knowledge of chemistry, biology, and medicine to evaluate the potential dangers of different chemicals and to develop safe handling and disposal procedures.
They may work in a variety of settings, including government agencies, research institutions, and private industry. In the context of the factory and waste management, a toxicologist could be hired to ensure that the waste produced by the factory is safe for the community and the environment, and that the disposal methods used are in compliance with relevant regulations.
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d. How many prokaryotic cells would fit on a meter stick?
e. How many eukaryotic cells would fit on a meter stick?
Answer:
D
Explanation:
DDDDDDDDDDDDDDDDDD
Which are limiting nutrients for plant growing
•water and nitrogen
•nitrogen and carbon
•carbon and phosphorus
•phosphorus and nitrogen
Answer:
phoshorus and nitrogen
Explanation:
isnt 1 or 2 and i dont think its 3 so that leads me to 4
Answer: phoshorus and nitrogen is the correct answer.
Which statement is correct? a.The number of electrons of a neutral atom always equals the number of protons. b. The number of neutrons always equals the number of protons. c.The number of neutrons always equals the number of electrons. d.Atomic weight is identical to atomic mass.
Answer:
A
Explanation:
The number of electrone will equal the number of protons in a NEUTRAL atom
Answer:
a. The number of electrons of a neutral atom always equals the number of protons.
Explanation:
Name two important parts of the celestial sphere
Explanation:
Earth's equator, axis, and orbit.
hope it will help u ✌️
select all the SI units of measurement.
inch
gram
liter
ounce
foot
meter
(SOMEONE PLEASE HELP ME CHOOSE WHICH ONES, 8th grade science)
Answer:
i think its Meter and ounce but im not 100% sure
Explanation:
А
2 The monomer of a nucleic acid is a nucleotide.
Label it on the diagram at right.
С
B
A nucleotide
Unlike any animal, people have developed_____
to increase their ability to observe and gather information.
1. Equipment
2.tools
3.instruments
4.senses
Answer:
senses?
Explanation:
unlike any animal, people have developed senses
the rest of the options would not make much sense given the sentence
which element is found in DNA and protein
The element found in both DNA and protein is nitrogen.
PLEASE HELP!
A researcher performed an analysis of the elemental composition of several fish species living in the
same body of water. The amount (in parts per million) of iron (Fe), calcium (Ca), potassium (K), sodium
(Na), and magnesium (Mg) found in each species is shown in the table.
45.10
Species Fe
Ca
K
Na
Mg
Species A 55.70 179.51 107.94 45.39
33.89
Species B 23.74 134.16 105.19
33.38
Species C 67.18 785.18 103.60 42.71
32.45
Species D 30.09 457.59 107.97 44.68
33.84
Based on this data, identify which elements are found in similar concentrations across all species of fish
tested. Explain how this data provides support for the hypothesis that all four species of fish descended
from a common ancestor.
Based on the data table on the concentration of the elements Fe, Ca, K, Na, and Mg in the different fish species:
the elements which are found in similar concentrations across all species of fish are K, Na, and Mgthis data supports the hypothesis that all four species of fish descended from a common ancestor because these three elements are found as cofactors in enzymes, thus, the four fish species have similar proteins.What is the importance of elements in living organisms?Elements are the building blocks of all living things.
Some elements are found in small amounts in the body whereas other elements are required in large quantities.
Some of the most important elements in living organisms include carbon, hydrogen, oxygen, sodium, potassium, and magnesium.
Some of the importance of elements in living organisms include:
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what is the function in a cell of the carbon compounds lipids
Answer:
Lipids are organic compounds that consist of carbon, hydrogen, and oxygen. They are made up of fatty acids and other compounds. They provide cells with energy, store energy, and help form cell membranes.
Carbon, hydrogen, and oxygen are the main components of lipids, which are organic molecules. Fatty acids and other substances make them up. They aid in the formation of cell membranes, supply energy to cells, and store energy.
What is function of carbon compounds lipids in cells?In a cell, lipids carry out a variety of tasks. Cells store energy as lipids termed fats for long-term use. Lipids also insulate plants and animals from their surroundings.
All cells are fundamentally made up of lipids, which also serve a variety of crucial functions.
They are essential parts of the nuclear membrane, endoplasmic reticulum, Golgi apparatus, and trafficking vesicles like endospores and lysosomes.
As well as other cellular compartments, including the plasma membrane.
Therefore, lipids have various the function in a cell as a carbon compounds.
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Neutrons and____
are found in the nucleus of an atom.
your answer goes here
Answer:
protons
Explanation:
Why was the Battle of Yorktown such a devastating defeat for the British?
Answer:
Cornwallis had marched his army into the Virginia port town earlier that summer expecting to meet British ships sent from New York. ... Cornwallis' surrender at Yorktown effectively ended the Revolutionary War. Lacking the financial resources to raise a new army, the British government appealed to the Americans for peace
Explanation:
Answer:
The British lost an entire army.
Explanation:
i just took the test.
Which is an example of osmosis?
Group of answer choices
a. oxygen moving into the bloodstream from the lungs
b. potassium ions moving in and out of an animal cell
c. carbon dioxide moving into the leaf cells of a plant
d. water moving into the root cells of a plant
Explanation:
Osmosis is about the diffusion of water in and out of cells, so the answer is D.
How can I solve -10(-5)+3 someone give me an example:)
Answer:
the answer is 53
Explanation:
step 1: Multiply -10 and -5 together that will give you 50.
( it is positive because whenever you multiply or divide 2 negatives together it becomes a positive.)
Step 2: Then add the +3 to the 50
Step 3: final answer equals 53.
Answer:
53
Explanation:
−10(−5)+3
Multiply −10 and −5 to get 50.
50+3
Add 50 and 3
53
Carbohydrate Summary:Word Bank: Starch, poly, glucose, amylose, monosaccharides, Fructose, sucrose, maltose,disaccharide, polysaccharide, dehydration synthesis, monosaccharidesThe monomer of carbohydrates are called1.__________________ . Examples are2.________________ and3. __________________. When we bond together 2 monosaccharidestogether by 4. __________________ ___________________ we get what’s called a5. ______________________. Examples of disaccharides are 6. __________________ and7. ___________________. When many8. _________________ are connectedby9._____________________ we call it a 10._________________________. The prefix11.________________ refers to many. Examples of polysaccharides include 12._______________________ in plants and 13. _______________________ in animals.
Answer:
Explanation:
1.The monomers of carbohydrates are called monosaccharides. Examples are glucose and fructose. When we bond together 2 monosaccharides together by dehydration synthesis we get what’s called a disaccharide. Examples of disaccharides are sucrose and maltose. When many monosaccharides are connected by glycosidic linkages we call it a polysaccharide. The prefix poly refers to many. Examples of polysaccharides include starch in plants and amylose in animals.
Why is the polarity of water molecules and hydrogen bonding essential to adhesion and cohesion?
Some properties like Polarity makes water a good solvent, cohesion helps in stick water molecule to itself while adhesion helps it to stick with other surfaces. Water have surface tension due to hydrogen bonding.
What are the difference between adhesion and cohesion ?when two similar molecule come closer adhesion occur where as in cohesion two similar molecules face the force of attraction.
Adhesion is the force of attraction observed between the water molecules and xylem vessels while Cohesion is unrestrained among water molecules.
Capillary action and meniscus are the effects of adhesion while Surface tension, meniscus and capillary action are the effects of cohesion.
The major forces responsible for adhesion are electrostatic or mechanical forces while Cohesion is the result of hydrogen bonding and Van der Waals forces.
A strong adhesion can lead to spread of liquid all over the surface while cohesion forms water droplets.
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What are the function of siphon of mosquito larva?
Answer:
The purpose of the siphon is to drain liquid from the reservoir by liquid flow that passes over a higher level than the liquid surface in the reservoir.
Which is one event that may lead to Primary succession? clear-cutting climate change volcanic eruption introduced species
Answer:
Primary Succession is when an uninhabited area becomes an ecosystem, and Secondary secession is when an ecosystem is destroyed an Independent factor, like a fire, a hurricane, stuff like that.
Explanation:
Clear-cutting climate change would be an example of Secondary Secession, and volcanic eruption introduced species would be an example of Primary Secession.
Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time.
The event that may lead to Primary succession is: volcanic eruption
What are the three causes of primary succession?The main causes of ecological succession include the biotic and climatic factors that can destroy the populations of an area. Wind, fire, soil erosion and natural disasters include the climatic factors.
What organisms come first after a volcanic eruption then what happens?Lava from a volcanic eruption hardens into bare rock. Primary succession begins with soil formation. The first stage of succession involves pioneer species. In primary succession, pioneer plants are those that can grow without soil, such as lichens.
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What life circumstance most directly affects the type of weather emergencies you are most likely to experience?
Your occupation
Your Income
Your location
Your race
how do infrared waves, uv waves,and microwaves affect us
Answer:
Here is your answer
Explanation:
Infrared radiation has a longer wavelength and lower frequency than visible light. Too much exposure can damage your eyes and skin. On a global scale, trapped infrared radiation contributes to global warming.
UV rays, either from the sun or from artificial sources like tanning beds, can cause sunburn. Exposure to UV rays can cause premature aging of the skin and signs of sun damage such as wrinkles, leathery skin, liver spots, actinic keratosis, and solar elastosis. UV rays can also cause eye problems.
Microwave radiation can heat body tissue the same way it heats food. Exposure to high levels of microwaves can cause a painful burn. But these types of injuries – burns and cataracts – can only be caused by exposure to large amounts of microwave radiation.
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The description of a cell organelle is given below.
found in plants and plant-like protists
uses energy from the sun
makes sugar from carbon dioxide and water
What organelle is being described
a mitochondrion
a ribosome
a lysosome
a chloroplast
Starfish, sea stars, and sea urchins are classified as echinoderms. What does the prefix "echin-" mean?
A
smooth skin
thin skin
С
striped skin
D
spiny skin
dry skin
Chemical reactions in the body involve heat.
Some of the reactions are called exothermic. What does the prefix exo" mean?
Answer:
The prefix "echin-" means D. The prefix "exo" means outside/external.
Explanation: