If you wanted to stay 20 feet below the surface of the water, what kind of buoyancy would you need to have? Positive, Negative or Neutral?
Answer:
It depends what kind of water.
Explanation:
Salt water:
You would need a negative buoyancy.
Fresh water:
You would need a neutral buoyancy.
Please let me know if I am wrong!
Buoyancy is the tendency of an object to float at the upper surface of the fluid due to upwards force. If the diver wants to stay below the water surface then they will need negative buoyancy.
What is buoyancy?Buoyancy has been defined by the upthrust experienced by an object in a fluid or liquid medium. It is a force that opposes or counters the weight of the object. Buoyancy can be positive, neutral, or negative. Positive buoyancy makes object float.
A negative buoyancy occurs when the object has more mass and density than the fluid so that the applied force makes them sink. So, if a person wants to stay 20 feet below the surface of the water then negative buoyancy has to take place.
Therefore, negative buoyancy will make a person stay at the bottom of the water.
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Which of the following are not photosynthetic organisms?
O phytoplankton
O algae
O consumers
O producers
18. Which of the following is not an advantage of using biological control?
A. It does not pollute the environment
C. It does not affect the health of humans
B. It upsets the natural food webs in the area
D. It is not costly
Answer:
Explanation:
It upsets the natural food webs in the area
i think B is the answer..
sorry if its not.
7. Are the contour lines closer together on Able Hill or Baker Hill?
Answer:
baker Hill
Explanation:
I know this because I know this.
Due to the intense heat and pressure on the inner core, scientists believe it is a (4 points) solid liquid semi-fluid gas
Answer:
Liquid
Explanation:
Vinegar is ...
A. Element
B. Composite
C. Homogeneous mixtures
D. Heterogeneous mixtures
Answer:
it's answer with
Explanation:
option A
CAN SOMEONE HELP ME ON 14-20 PLEASE!!!!!!!!!!!!
Answer: 14 a 15 d 16 c 17 a 18 b 19 c 20 d
Explanation: give brainlest
Ms. Hendren has decided that she would like to grow some tomatoes and wants to know how much light will cause the plant to grow the largest tomatoes. She plants tomato seeds in 4 different pots and leaves one pot in the dark. She gives 6 hours of light a day to the second, 8 hours of light a day to the third, and 10 hours of light a day to the fourth. After 3 months she measures the size of the tomatoes grown. Match up each variable in the experiment. Group of answer choices Independent varible [ Choose ] Dependent variable [ Choose ] Control variable [ Choose ] Control group [ Choose ]
Answer:
The correct answer is -
Independent variable - the amount (time period) of light given to pots.
Dependent variable - size of tomatoes
Control variable - dark or absence of light
Control group - pot placed in the darkroom.
Explanation:
The independent variable is the variable that is changed or manipulated in particular research or study to see the effect of that variable on dependent variable. In this case, the amount of light each pot gets is the independent variable.
The dependent variable is the variable that depends on the change in the independent variable. The size of tomatoes is the dependent variable here.
The control variable is the variable that remains in standard condition or condition which can be used to compare with the effect of the independent variable. The absence of light on one of the tomato pot is the control variable.
The control group is the group of subjects did not get any treatment that experiment group receives. The pot which is placed in the dark room is control group here.
DNA is a polymer built of many monomers. What is the monomer unit used to build a DNA molecule?
Answer: Nucleotides, Let me know if it was right. :)
~ soda is ...
A. Element
B. Composite
C. Homogeneous mixtures
D. Heterogeneous mixtures
How can marine succession affect a population? Plz I need help.
Answer:
By providing the ecosystem with water and marine life for other marine animals and land animals to eat.
CAN SOMEONE ANSWER 22-28 PLEASE!!!!!!!!!!!!!
Answer:
minus six ( another way to write it "-6" )
Explanation:
22 - 28 is -6, or maybe not because this is biology i did math
Which describes sexual reproduction, and not asexual reproduction?
Answer:
One characteristic that describes sexual reproduction and that is not present in asexual reproduction is the combination of genetic information from two parents.
Explanation:
Sexual reproduction involves the participation of two individuals, whose genetic material is contributed and when they unite they give birth to a new individual, through the process of fertilization.
Individuals who reproduce sexually have the ability to form cells with half of their genetic charge, called gametes. The union of these cells forms the zygote, from which a new individual develops.
In asexual reproduction, a single individual is responsible for the reproductive process, which occurs by
Gemination. Bipartition Fragmentation. Parthenogenesis. Sporulation or sporogenesis.Each one of these processes represents a different type of reproduction than the one that occurs sexually.
Hydrogen peroxide is a substance that is produced as a byproduct of many cell processes. However, hydrogen peroxide is toxic to cells. In fact, if cells are unable to break down hydrogen peroxide, they become poisoned and die.
The chemical reaction for the breakdown of hydrogen peroxide is shown below.
What role does catalase play in this reaction?
Answer:
In the reaction of decomposition of hydrogen peroxide (H₂O₂), catalase is the enzyme responsible for catalyzing this reaction.
Explanation:
Catalase is an oxide-reductase enzyme whose substrate is H₂O₂, a potentially harmful by-product of metabolism.
The reaction that is mediated by catalase is:
H₂O₂ ------catalase--- → 2H₂O + O₂
where catalase is the enzyme that breaks the bond of the additional oxygen in the molecule to obtain H₂O and free O₂.
People with catalase deficiency may experience disorders and diseases due to the accumulation of H₂O₂ in the body.
The blood
vessel carry deoxygenated blood in human body
heyyy…HELPPP ME PLEAASSEEEE, ILL MARK YOU BRAiNLIESTT
Answer:
Li2O
ionic
Explanation:
Lithium belongs to group 1 and elements in group 1 form ionic or electrovalent compound
nitrogen fixation
a) is the process where nitrogen is converted to a usable form
b) is accomplished by plants when they break down soil.
c) occurs as a result of photosynthesis
d) none of the above
Answer:
A. is the process where nitrogen is converted to a usable form
Explanation:
Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems. A small amount of nitrogen can be fixed when lightning provides the energy needed for N2 to react with oxygen, producing nitrogen oxide, NO, and nitrogen dioxide, NO2
All eukaryotic cells contain mitochondria. What does this mean?
Answer:
Mitochondria- often called the powerhouses of the cell — enable eukaryotes to make more efficient use of food sources than their prokaryotic counterparts. That's because these organelles greatly expand the amount of membrane used for energy-generating electron transport chains.
Explanation:
Answer:
Mitochondria — often called the powerhouses of the cell — enable eukaryotes to make more efficient use of food sources than their prokaryotic counterparts. That's because these organelles greatly expand the amount of membrane used for energy-generating electron transport chains.
Explanation:
Lion vs elephant digestion lab
Answer:
In lions, digestion takes place in the stomach while in elephant, digestion takes place in cecum.
Explanation:
Lion eats meat which needs a powerful digestion of strong juices which helps in the breakdown of food. There are four compartments of the stomach of lion that are rumen, reticulum, omasum, and abomasum. These chambers have microorganisms which helps in the breakdown of food materials while in the elephant, the stomach primarily functions in the storage of food and digestion takes place in the cecum that is connected to the large intestine.
What does it mean to have a hypotonic solution?
Answer:
A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.
Answer:
alright so there's 3 kinds of solutions!
hypotonic, isotonic and hypertonic
basically a cell is in a hypotonic
solution if the concentration of water
inside the cell is LOWER than the concentration
outside the cell. Water diffuses from high
to low. Water enters the cell.
and this is talking about ions!
Please help
Fill in the blank
Relate the law of conservation of mass to photosynthesis
The Law of Conservation of Mass holds true in photosynthesis
because the number of ______________
Answer:
individual atoms that compose living organisms have long histories as they cycle through the biosphere.
Down syndrome and Klinefelter's syndrome have which of the following traits in common
Answer:
There is an extra X chromosome in the body
Explanation:
i beleive this is most common on males but im not sure
Please help I’ll mark brainlist and give feedback
Answer:
High pop in clumped area.
Which plant system transports sugars from the leaves to the roots?
Answer:
Phloem transports sugars and amino acids dissolved in water
Explanation:
Answer:
XYLEMExplanation:
Plants have two transport systems-xylem and phloem. Xylem transports water and minerals phloem transports sugar and amino acuds dissolved in water.what does cytoplasm contain?
Answer:
WaterSaltsDifferent organic moleculesI hope this helps!
Having straight ears (E) is dominant over droopy ears (e). A parent with straight ears is crossed with a parent with droopy ears. The Punnett square will show the possible genotypes of the offspring. What is the genotype of each square?
A: EE, Ee, ee
B: EE, Ee, ee
C: EE, Ee, ee
D: EE, Ee, ee
Answer:
Ee Ee ee ee 50/50 on having either droopy ears or straight
Explanation:
The genotype of square A is Ee, square B is ee, square C is Ee, and square D is ee.
What are genotypes?Genotypes are the genetic makeup or the complete set of genes that an individual organism possesses. They are responsible for determining an organism's physical and behavioral traits.
The genotype of an organism is encoded in its DNA, which consists of long sequences of nucleotides that code for specific proteins and other functional molecules. These nucleotide sequences are organized into genes, which are located on chromosomes in the nucleus of the cell.
Genotypes can be inherited from parents and passed down to offspring through sexual reproduction. However, mutations and genetic variations can also occur spontaneously, leading to changes in an individual's genotype.
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In which situation is energy released by a plant?
when oxygen is released into the air
before energy is stored in sugar molecules
when plants break down sugar molecules
when sugar and oxygen are made
Answer:
When sugar and oxygen are made
Explanation:
Through photosynthesis certain energy’s convert solar energy into chemical energy. Photosynthesis is the process used by plants to harness energy from sunlight. It is an endothermic (takes in heat) chemical process that uses sunlight to turn carbon dioxide into sugars. The sugars are used by the cell as energy, and to build other kinds of molecules.
Answer:
when plants break down sugar molecules
Explanation:
very confused on question 3,, help
Answer:
the answer is resiliency
Which is the advantage of water's heat capacity?
Answer:
it protects aquatic life from changes in air temperature
Explanation:
Answer:
The following
Explanation:
The high heat capacity of water also helps regulate the rate at which air changes temperature, which is why the temperature change between seasons is gradual rather than sudden, especially near the oceans. This same concept can be expanded to a world-wide scale.
During which type of asexual reproduction is a small portion of cytoplasm and half of the chromosomes separated from the rest of the cell?
A. budding
B. binary fission
C. mitosis
D. sporulation
Answer: I believe it's mitosis.
Explanation:
Answer:
binary fission
Explanation: