A gas is given off when two substances are mixed.
physical change: A copper rod is hammered into a thin sheet.
A solid forms when two clear liquids are mixed.
A matchstick changes color when it burns.
explanation
a physicals change vs chemical
physical change is like cutting, changing shape etc, it the molecules that make it and the chemicals of it stay same
chemical change when it chemically changed such as cooking meat
7. Where do the light-dependent reactions take place?
Answer:
in the chloroplasts I think that's how u spell it
the major chemical constituent of a cell, by weight, is
Answer:
Water
Explanation:
It is 70% of a cell's weight.
Mary wanted to know if seeds needed water to start growing or if any kind of liquid would work. Mary set up several experiments to find out. She used radish seeds, paper towels, plastic bags, and different kinds of liquid in her experiment. Mary put three seeds into each bag. She then used 30mL of liquid to wet a paper towel and put a different paper towel in each bag. Mary put all of the bags on the same table next to a window so that they could each get the same amount of light. She waited three days and then checked her plants.
independent variable:
dependent variable:
control:
experimental group:
control group:
Answer:
independent variable: 30mL of liquid to wet a paper towel
dependent variable: how much the plants grow if at all.
control: they all received the same amount of light, that or the paper towels are the same.
experimental group: It's not stated that she did indeed use water, but there is a need for a control group, if so, then it's the other 2 groups that didn't use water, also because I can't think of anything else.
control group: The groups that used water rather than the other 2 plants.
Explanation:
who has a better sense of smell, dogs or lions ( i dont know if the subject is right )
Answer:
dog
Explanation:
Answer:
cats smell better than dogs by a landslide and since a lion is a cat, you can say lions smell better.
Explanation:
Carbon is rare in that it does NOT bond with any other elements.
Select one:
True
False
Answer:
False
Explanation:
-Carbon has 4 electrons in its outer shell
-It can achieve a full outer shell by forming Covalent Bonds
please answer this. what is it
Answer:
B: mountain lions porbably outcompete wolves for food.
I need some help pls
1what is the function of an enzyme
2 how are proteins made
the proteins are made up of fat
Classify the following as a phenotype or a genotype: a Aa- Brown eyes- TT- Blonde hair-
Answer:
Phenotype: Brown Eyes, blond hair.
Genotype: a Aa, TT
Explanation:
Phenotypes are visible traits.
Genotypes are non-visible.
the tissue that covers body organs in an example of ___epithelial tissue ____.
A. epithelial tissue
B. nervous tissue
C. connective tissue
D. muscle tissue
The tissue that covers body organs in an example of epithelial tissue.
Epithelial tissue covers the surface of the body and lines the various body cavities and internal organs.There are different types of epithelial tissue:Simple squamous epitheliumStratified squamous epitheliumCuboidal epitheliumColumnar epitheliumCiliated columnar epitheliumGlandular epitheliumBasically all epithelial tissues have a fibrous basement membrane.Their functions are protection, absorption, secretion, etc.Answer:
A. Epithelial tissue
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
It’s about drive, it’s about power, we stay hungry, we devour
Put in the work, put in the hours and take what’s ours
Black and Samoan in my veins, my culture bangin’ with Strange
I change the game so what’s my name? (Rock)
What they gonna get though?
On a cellular level, why do we need to breathe?
a
Our cells need oxygen
b
Our cells need glucose
c
Our lungs are empty
d
Our cells need carbon dioxide
Answer:
A. Our Cells need Oxygen
what role did the black death play in the decline of feudalism
Answer:
The Black Death brought about a decline in feudalism. The significant drop in population because of massive numbers of deaths caused a labor shortage that helped end serfdom. Towns and cities grew. The decline of the guild system and an expansion in manufacturing changed Europe's economy and society.
Explanation:
Hope This Helps~
Happy Hoildays~
~Zero~
What causes black holes to form?
Kaya had an organ transplant. She went to the doctor a week later, and the doctor did a blood test. Her lymphocyte count had increased. She went to the doctor a month later for the same test, and her lymphocyte count was higher. What is the best explanation as to why her lymphocyte levels were increasing
Answer:
Kaya was not tissue typed prior to her surgery, and her body is mounting an immune response.
Describe the process of oxidation in terms of electrons AND energy.
Oxidation is described as the loss of electrons and energy by a molecule.
OXIDATION:Oxidation is a process whereby a molecule loses electrons (e-) or energy to become positively charged. Oxidation changes the oxidation number of the molecule involved depending on the number of electrons lost. Reduction is the opposite of oxidation, and it entails gain of electrons and energy by a molecule. Together, they are called oxidation-reduction or redox reaction.Learn more about oxidation at: https://brainly.com/question/3867774?referrer=searchResults
Chromosomes are made of ________ and __________?
Answer:
thwy are made out of organisms and genetics
Answer:
Proteins and DNA organized into genes
Explanation:
7) Check the terms that fit into the science category "Biology". Select all that apply. air light solar system water animals sound land plants
please help need answer.
Answer:
Column A
3. The non-use of drugs is helping with performance, as a sports player myself I know that if I used drugs there would be problems with my performance in terms of cardio; drugs can make you overdose, have concussions, hallucinations, and it can damage lungs, liver, hear, which will stop you from being able to perform well or even play at all. These can be caused by steroids which can damage your insides.
Column B
2. The use of drugs is definitely affecting the student because he could be hallucinating or having trouble with anxiety because drugs can cause anxiety, making it impossible to concentrate and allowing your brain to have trouble in performing in the way it needs to help you in school.
A process that release every from food molecules is
Answer:
Cellular respirationCellular respiration releases energy by breaking down glucose and other food molecules in the presence of oxygen.within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of meiosis illustrated for a typical cell, which contributes most to diversity among the warblers?
Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.
----------------------------
There are different mechanisms involved in producing genetic variation among descendants. These are,
Crossing-over between homologous chromosomes (prophase 1), Random lining of homologous chromosomes (metaphase 1),Random fertilizationThe Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.
The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.
After crossing over, homologous chromosomes get separated again.
In the attached imaged there are four different stages of meiosis.
Stage C is the one that contributes the most to diversity.
We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.
In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.
-----------------------------------
You can learn more about crossing over at
https://brainly.com/question/12911831?referrer=searchResults
https://brainly.com/question/394891?referrer=searchResults
is the bladderwrack ficus gardneri endangered?
Marine Bio.
Answer: Chromista
Explanation:
__________ is needed in the body to make vitamin D, bile acids, and cortisol. Group of answer choices Phospholipid Cholesterol Lipase Triglyceride
Explanation:
Cholesterol is the correct answer
!!!!NEED HELP ASAP ILL GIVE BRAINLIEST AND 25 POINTS!!!!! How do proteins help transport of materials through the membrane?
Answer:
Channel proteins can aid in the facilitated diffusion of substances by forming a hydrophilic passage through the plasma membrane through which polar and charged substances can pass.
Explanation:
Answer: By forming a continuous protein pathway across the membrane, these proteins enable specific hydrophilic solutes to cross the membrane without coming into direct contact with the hydrophobic interior of the lipid bilayer. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.
TIME REMAINING
40:27
What must happen before a chemical reaction can begin?
The activation energy must be exceeded.
The activation energy must be reached.
The concentrations of products and reactants must be equal.
The concentration of reactant molecules must be reduced.
Answer:
A
Mark me as brainliest ONLY if my answer is correct
I apologize if my answer is incorrect I will better my answering strategies if it is incorrect.
Explanation:
a condition in which the number of red cells or the amount of hemoglobin is below normal
Answer:
The condition is anemia.
Explanation:
Anemia is a medical condition in which the red blood cell count or the hemoglobin is less than normal.
What three things might influence a slide when conditions are right? What types of material can make up a flow? (Site 1).
A slide can be influenced by friction, weight, and the angle of the slope. The materials that form flow generate less friction depending on the environmental conditions.
A slide is a movement that occurs when a fragment of soil/rock suddenly moves down a slope.
Slope stability is a factor influenced by the angle of the slope and the strength of the materials (e.g., rocks) on it.
The slide movement can ultimately be considered as a battle between friction versus gravity.
Learn more in:
https://brainly.com/question/15168022
What process is the "copying" portion of protein synthesis? What is being copied? Why does it have to be copied?
The process of protein synthesis is known as translation. During this process, the mRNA is being copied into an orderly sequence of amino acids to produce a polypeptide.
During gene transcription, a fragment of DNA called gene is used as a template to generate a complementary messenger RNA (mRNA) sequence.
Afterward, this mRNA will be used as a template to create a protein by a process called translation.
The linear order of triplets of nucleotides or codons in mRNA will be used to add ordered amino acids to the growing polypeptide chain (i.e., the protein).
Learn more about mRNA in:
https://brainly.com/question/15878647
Explain how the water cycle
affects the climate of an area.
Answer:
Dry soils interrupt the water cycle's evaporation and transpiration stages. Rainfall decreases and deserts grow as a result of insufficient evaporation and transpiration, causing climate change.
Explanation:
hope it help! :)
What best explains the relationship between photosynthesis
Оа
The higher the rate of formation of products in respiration, the lower the rate of photosynthesis.
Photosynthesis depends on the carbon dioxide released during cellular respiration.
Ob
О с
C
Cellular respiration depends on the water released during photosynthesis.
C
They have the same set of product molecules,
Answer:
I think it's the last one! "They have the same set of product molecules"
Explanation:
Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.
Whereas sodium is found mainly in the extracellular fluid, most ________ is found in the intracellular fluid.
Spindle fibers begin to form.
Answer: Yes that is true but you gave basically NO information at all.
Explanation:
Answer:
yes that that that that Tish that that
