Answer:
Independent variable- SIDEWALK SALT
Dependent variable- ICE FORMATION
Controlled variables- same size of ice, same sidewalk
Explanation:
Based on the information given in this question, Brenda is helping Grandma Hippity Hop test the effect of sidewalk salt on the formation of ice on her sidewalk.
In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter. In this case, the SIDEWALK SALT is the independent variable because it is the one being changed i.e used or not used.
Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable that is measured or recorded in an experiment. In this case, the ICE is the dependent variable because its formation is dependent on the SALT (independent variable).
Controlled variable or constants are variables of an experiment that are kept unchanged throughout the experiment. In this case, the SAME SIDEWALK AND SIZE OF ICE are used, hence, they are the controlled variables.
what is bryophytes?write any two characteristics of pteridophyts. plz
Answer:
Bryophytes is a small flowerless green plant of the division Bryophyta, which comprises the mosses and liverworts.
Any two characteristics of pteridophyts are:
They are seedless, vascular plants that show true alternation of generations.
They reproduce by spores, which are developed in sporangia.
How do cold ocean currents affect climate ?
A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus?
the external stimulus of fear
the internal stimulus of fear
the external stimulus of hunger
the internal stimulus of hunger
Answer:
internal stimulus of hunger
Explanation:
Lions do not fear externally or internally of the zebra because they eat the zebra once they kill it and they are chasing after it so no fear what so ever.
Lions are naturally lazy and hunger is normally why they would be hunting because they need food to survive, however this is not always the case.
there have been a pair of documented pair of male lions known as the Tsavo Man-Eaters, who hunted for sport. Their den contained animal and man bones.
they actually made a movie about it, If you want to watch the movie just look up Ghost in the Darkness. You can actually see the lions in the Field Museum of Natural History in Chicago, Illinois.
Hope this helped you!
Answer:
Internal stimulus of hunger
Explanation:
Edge 2021
The____is the thing being dissolved
A. Solute
B. Solution
C. Solvent
Answer:
Solution?
Explanation:
B I think is the correct answer!
Mendel came up with his Law of Independent Assortment through his investigations studying ?
whether or not the inheritance of one trait affected the other.
simple monohybrid traits such as plant height.
the passing down of dominant seed shape to offspring.
how self-pollination affects the second filial generation.
Answer:
A. whether or not the inheritance of one trait affected the other.
Explanation:
I just had this question on my exam :)
what is the cure of this pandemic
Answer:
people
Explanation:
wearing masks, sraying at home,
When different types of staple fibers are spun together into a single yarn, the result is a
Answer:
String
Explanation:
That is what yarn is.
Which product is the result of light reactions in photosynthesis?
A. Water
O B. Glucose
O C. Oxygen
O D. Carbon dioxide
Answer: C) Oxygen
Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which forms a cycle.
What are the most basic building blocks of all organisms?
OA. bones
OB. muscles
OC. organs
D. cells
Answer: Cells
Explanation:
You are studying the genomes of deep sea organisms when you come across a brand new species of lantern fish. In the lab, you measure the percent of nucleotides in the nucleus that contain adenine as their base and that percent is 30%. 10. Calculate the percent of thymine nucleotides: _______________ 11. Calculate the percent of guanine nucleotides: _______________ 12. Calculate the percent of cytosine nucleotides: _______________
Answer:
Thymine = 30%
Guanine = 20%
Cytosine = 20%
Explanation:
DNA is a double-stranded molecule made up of long chains of nucleotides (A, T, G, C). Each chain is the strand. However, According to Chargaff, the amount of adenine in a DNA is equal to the amount of thymine while the amount of guanine equals the amount of cytosine. That is:
(A = T) + (G = C) = 100%
All together, they all make up 100%. According to this question, the percent of nucleotides in the nucleus was measured to contain adenine as their base which is 30%.
If Adenine is 30%,. Then Thymine is 30% as well.
A = T = 30+30 = 60%
Hence,
60% + G + C = 100%.
G + C = 100 - 60
G + C = 40%
Since, G = C, 40/2 = 20%. Hence, G = 20% while C = 20%
All together,
A = 30%
T = 30%
G = 20%
C = 20%
According to the USDA, a "consists of a community of individuals who pledge support to a farm operation so that the farmland becomes,
either legally or spiritually, the community's farm, with the growers and consumers providing mutual support and sharing the risks and benefits
of food production."
-sustainable operation
-farmers' market
-farmers' cooperative
-CSA
Answer:
The correct answer is CSA.
Explanation:
Community Supported Agriculture (CSA) is an alternative model for the distribution of agricultural products directly from the farmer to the consumer, it consists of a group of people who form a cooperative to grow and consume food. Through this socio-economic model, consumers lend their support to producers, in exchange for a direct and regular delivery of biological products, that is, producers and consumers support each other and share the benefits and risks of food production.
My main organs are the heart and blood vessels.
What am I?
Answer:
cardiovascular system
Explanation:
Which of the following is an example of a positive feedback loop:
I. As the Earth’s surface warms due to global warming, water evaporation from a lake will initially increase. As the lake level drops, the surface area decreases and evaporation also decreases.
II. Water vapor from ocean evaporation creates low altitude clouds. Sunlight that would normally warm the Earth’s surface is instead reflected back to outerspace.
III. Water vapor from ocean evaporation creates high altitude clounds. Heat that would typically escape the atmosphere into outer space is trapped in the atmosphere instead.
I only
II only
III only
I and II.
I, II and III
A stream that flows into two different rivers is part of two
A reservoirs.
B. tributaries.
C. divides.
D.
watersheds.
Answer:
Tributaries
Explanation:
I wound think that they would be branching of so thats what i would say
A water body that flows on the surface of the earth is called a stream. The river is a larger water body compared to streams. Stream is shallow likened to river volume.
A stream that flows into two distinct rivers is part of two:
Option b. Tributary
This can be explained as:
A reservoir is a lake that reserves the water either created naturally or artificially.A stream that merges into the river is called tributary or affluent.A watershed is a drainage bay where the water from precipitation gets accumulated and drains to common river or water bodies.Therefore, a tributary is a stream that flows into two different rivers.
To learn more about streams and tributaries follow the link:
https://brainly.com/question/7557130
How does the excretory system work with the muscular system?
Answer:
How the Muscular and the excretory system work together. The Muscular system helps the Excretory system by moving waste through the body and protect its organs. The Excretory system helps the Muscular system by getting rid of carbon dioxide from the muscles.
Explanation:
main stages of the cell cycle
Answer: The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.
Identify landform B, explain how it forms, and tell whether it is the result of erosion or deposition.
Answer:
Erosion because if you look it looks like it is slowly eroding
Explanation:
Which of the following does NOT describe prokaryote chromosome organization?
diploid
found in the nucleoid
circular
tightly coiled
Answer:
diploid
Explanation:
diploid sorry if I'm wrong
what is anther term for muscle cell
Answer:
myocyte
Explanation:
Do you think wolves are a keystone species? Explain your answer
Answer:
I think that wolves are a keystone species because they regulate prey. If they were gone, prey would overpopulate and decrease the population of smaller organisms such as plants. Without plants and other food sources for the prey, the prey would also decrease eventually.
Explanation:
The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo?
A. Inversion
B. Substitution
C. Insertion
Answer:
The answer is A. Inversion
Explanation:
the codes is just changing
hope this helps
What is the correct amino acid sequence for the given DNA sequence? TACACGTTCACC
A) methionine, valine, lysine, tryptophan
B) methionine, cysteine, lysine, tryptophan
C) methionine, cysteine, arginine, serine
D) serine, valine, lysine, stop
Answer:
The correct answer is - B) methionine, cysteine, lysine, tryptophan
Explanation:
Amino acid chain or sequence depends on the codes or the information mRNA is copied from the DNA sequence. The DNA sequence is the sequence of the nitrogenous bases that are coded or copied by mRNA in the complementary sequence and then translate into an amino acid sequence:
DNA: TACACGTTCACC
mRNA: AUG-UGC-AAG-UGG
Amino acid sequence: methionine, cysteine, lysine, tryptophan
Blood. It is composed of plasma, red blood cells, white blood cells, and platelets. Do you know the major function of each? Identify
the blood component that is not matched with the correct function.
A)
Blood platelets play a role in coagulation
B)
Red blood cells transport oxygen and carbon dioxide.
The plasma component of blood is key to nerve and muscle stimulation
D)
White blood cells are involved in the immune response to identify and
target pathogens
Answer:
I think a is the awnser because it makes the most sense
which of the following is a true statement about mechanical weathering
mechanical weathering changes the rock into a different material
mechanical weathering can break rocks into smaller sediments
mechanical weathering is only occur by volcanoes
earthquakes produce mechanical weathering only
Answer:
The answer is B
Explanation:
PLEASE ANSWER!! I WILL GIVE BRAINLIEST!!!
Which layer contains most of the air pollutants released by human
activity?
A. troposphere
B. mesosphere
C. thermosphere
D. asthenosphere
Answer:
A: Troposphere
Explanation:
The troposphere contains the largest percentage of the mass of the atmosphere relative to the other layers. It also contains some 99 percent of the total water vapor of the atmosphere. The temperature of the troposphere is warm (roughly 17º C) near the surface of the earth.
Answer:
a
Explanation:
why was the Sacco and Vanzetti trial significant
A( it showed how the Red Scare had influenced attitudes toward immigrants.
B( it showed that Americans were Sympathetic to immigrants.
C( it showed that immigrants were treated fairly by law enforcement officials.
D( it was demonstration of judicial fairness to immigrants.
Answer: A. It showed how the red scare had influenced attitudes toward immigrants
Explanation:
There was a rise for nationalism( a negative thing mind you, that discriminates against "non-Americans") in the early 20s, and it affected most of Americas judgement of a fair trail (and treatment in general) towards immigrants.
Does the environment ever change or is it always the same? Explain
Answer:
The Earth's climate has always changed
Explanation:
Over the course of the Earth's 4.5-billion-year history, the climate has changed a lot. This is true. But the rapid warming we're seeing now can't be explained by natural cycles of warming and cooling.
Answer:
The environment is always changing
Explanation:
The earth is always changing
Lions and Tigers are the most similar of the "Big Cats". Why are Lions and Tigers so similar?
Big Cats | Big cats art, Wild cats, Big cats
Question 4 options:
because lions and tigers both need to hunt
because lions and tigers have many of the same genes
because lions and tigers have the same type of cells
because lions and tigers share the same organelles
Answer:
B. Because lions and tigers have many of the same genes.
Explanation:
You can rule out A, since all big cats and other predatory animals must hunt to survive.
C can be ruled out, as all animals have roughly the same cells.
D can be ruled out as well, since all animal cells have the same organelles (essentially the same reason C can be ruled out.)
That leaves us with option B. B is the most likely answer, as lions and tigers share most of their DNA with one another.
A biochemist studying a surface protein that is normally anchored to the cell membrane of a human cell determines the sequence of amino acids in the protein. Upon analyzing the amino acid sequence, the biochemist notices that most amino acids found in the protein sequence of the anchor portion of the protein are nonpolar uncharged amino acids.
Which argument BEST explains this result?
Answer:
C
Explanation:
explain in your own words : Are mutations good or bad for a population
Answer:
Mutational effects can be beneficial, harmful, or neutral, depending on their context or location. Most non-neutral mutations are deleterious. In general, the more base pairs that are affected by a mutation, the larger the effect of the mutation, and the larger the mutation's probability of being deleterious.