Imagine carefully weighing a metal can, leaving it out in the rain for weeks and weeks until it was very rusted, and then carefully weighing it again. Would the can be heavier or lighter after it was rusted?
Answer:
The answer would be heavier, though it depends upon the type of metal. Rusting is essentially corrosion. Rust is often caused by a piece of metal getting soaked in water and then being exposed to oxygen. The rust will add more weight to the can so it becomes heavier.
Leaving out metal can in the rain for weeks and weeks until it was very rusted, and then if we carefully weighing it again it can be found that the can weighs more because the rust deposited on the metal can adds more weight.
What is rust?
Rust is referred to as an iron oxide, and a form of corrosion which is caused by a chemical reaction which affects masses of iron and steel.
Once formed, rust starts to eat away at the metal, forming a flaky, orange red coating which weakens the iron. It occurs when the metal reacts with oxygen and water.
For more details regarding rusting, visit:
https://brainly.com/question/2289143
#SPJ2
Which of the following describes the relationship between genes and
chromosomes?
Chromosomes form into genes during cellular reproduction
Genes are special sequences of nucleic acids found on chromosomes
Every gene an organism has is found on every one of its chromosomes
All of an organism's chromosomes can be found next to its genes in the cell nucleus
Answer:
Genes are special sequences of nucleic acids found on chromosomes.
Explanation:
A single DNA molecule is a chromosome. A gene is a certain chromosome region of DNA.
All cells of the body are genetically the same, but cells are different from others because specific gene sets are expressed. Different cells, therefore express different genes, which enable them to perform a specific function.
The deoxyribonucleic (DNA) genes are segments that contain a code for a certain protein that works in one or several cell types in the body. Chromosomes are cellular structures that contain the genes of a person. Genes that are in the cellular nucleus are contained in chromosomes.
What is an agricultural subsidy?
Select one:
- A sum of money paid to farmers and agribusinesses by the government to
supplement their income and manage crop supply
-A sum of money paid to farmers and agribusinesses by the government in
exchange for their land and machinery
о
-A bank loan available to commodity crop farmers in case market prices fall
Answer:
A sum of money paid to farmers and agribusinesses by the government to
supplement their income and manage crop supply
Marcus is testing a hair sample from the telogen stage. What is likely to be TRUE about this sample? A. There will be several medullas present. B. There will be mitochondrial DNA present. C. There will be nuclear DNA present. D. There will be very little DNA present.
Answer:
c
Explanation:
no explanation (plz give brainliest)
The statement C is correct. There will be nuclear DNA present.
What is DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
Moreover, DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes.
Hence, DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases.
Learn more about DNA:
https://brainly.com/question/2785013
#SPJ2
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
WHATS THE ANSWER ?????
Answer:
Antigens are secreted by the endocrine system
Explanation:
The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with
Which of the following substances will conduct electricity?
A) Methanol
B) Aqueous KCI
C) NaCl in its solid form
D) Sugar solution
Answer:
b
Explanation:
because It have ionic bonding and when in molten form ions are mobile and carry a charge however when in solid form it wouldn't conduct electricity as the ions will be fixed in position.
hope this helps:)
What are the raw materials (reactants/goes into) for photosynthesis?
A. water and glucose
B. carbon dioxide and water
C. glucose and oxygen
Answer:
c
Explanation:
EZ POINTS GRADE 2 SCIENCE PLEASE ANSWER FUE TOMRROWAEfKEAFEAS
fill in the blanks wiht the words givewn below
Answer:
1.) tides
2.) Salinity
3.) Oceans
4.) reef
5.) Intertidal Zone
6.) Neritic Zone
7.) Benthic Zone
8.) Reef
9.) Estuary
10.) Marine Biome
Hope this helps!
fungi and bacteria are_____.
-plants -producers -decomposers
Answer:
decomposers
Explanation:
Answer:
decomposer
Explanation:
Fungi and bacteria are the most common decomposers.
What are the two main components of the cell cycle
In eukaryotic cells or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.
What is cell cycle?
The cell cycle, or cell-division cycle, is the series of events that take place in a cell that cause it to divide into two daughter cells. These events include the duplication of its DNA (DNA replication) and some of its organelles, and subsequently the partitioning of its cytoplasm and other components into two daughter cells in a process called cell division.
In cells with nuclei (eukaryotes, i.e., animal, plant, fungal, and protist cells), the cell cycle is divided into two main stages: interphase and the mitotic (M) phase (including mitosis and cytokinesis). During interphase, the cell grows, accumulating nutrients needed for mitosis, and replicates its DNA and some of its organelles. During the mitotic phase, the replicated chromosomes, organelles, and cytoplasm separate into two new daughter cells. To ensure the proper replication of cellular components and division, there are control mechanisms known as cell cycle checkpoints after each of the key steps of the cycle that determine if the cell can progress to the next phase.
In cells without nuclei (prokaryotes, i.e., bacteria and archaea), the cell cycle is divided into the B, C, and D periods. The B period extends from the end of cell division to the beginning of DNA replication. DNA replication occurs during the C period. The D period refers to the stage between the end of DNA replication and the splitting of the bacterial cell into two daughter cells.
Learn more about cell cycle
https://brainly.com/question/5034994
#SPJ2
An advantage of asexual reproduction is that it __________. Group of answer choices allows a species to easily rid itself of harmful mutations enhances genetic variability in the species allows the species to endure long periods of unstable environmental conditions produces offspring that respond effectively to new pathogens maintains successful genetic combinations without modification
Answer:
Maintains successful genetic combinations without modification.
Explanation:
Asexual reproduction usually creates perfect copies of the parent. If the parent is genetically sound creature, then a successful genetic combination is being reproduced and maintained without any changes or modification.
help with biology please
Answer:no
Explanation:picture
Answer:
i think its number 1
hope that helps!
Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6,022 yellow and 2,001 green (8,023 total). Which of the following statements correctly describes the relationship of the allele for green soods to the allele for yellow seeds? A. The green allele is dominant to the yellow allele B. The two alleles exhibit incomplete dominance C. The green alicle is recessive to the yellow allele D. The two alleles are codominant
Answer:
C. The green allele is recessive to the yellow allele
Explanation:
Complete dominance occurs when one gene variant or allele referred to as the 'dominant allele' completely masks the expression of another allele referred to as the 'recessive allele' in heterozygous individuals, i.e., in individuals carrying one copy of the dominant allele and one copy of the recessive allele for a particular locus/gene (whereas homo-zygous individuals carry the same alleles for a given locus/gene). Mendel crossed pure lines of pea plants, i.e., homo-zygous lines for different traits such as seed color (yellow and green) and seed shape (round and wrinkled). In this case, the parental cross was YY x yy, where the 'Y' allele is dominant and encodes for yellow seed color, and the 'y' allele is recessive and encodes for green seed color. From this cross, Mendel obtained a hybrid F1 (i.e., all progeny was heterozygous with genotype Yy). An expected 3:1 ratio as observed in this case (6,022 yellow and 2,001 green seed >> 3:1 ratio) is characteristic of the progeny that results from mating between F1 heterozygous parents, where each parent has one dominant allele and one recessive allele, i.e., F1 parental cross: Yy x Yy >> F2: 1/4 YY (yellow color); 1/2 Yy (yellow color); 1/4 (green color) >> 3:1 ratio of yellow to green seeds.
Your nervous system includes the brain and spinal cord
A. True
B. False
Answer: A
Explanation: The nervous system is the brain and spinal cord.
Answer:
A. True
Explanation:
what animal has the longest lifespan?
Answer:
Ans.The longest living mammal is the bowhead whale, which can live up to 200 years. Also known as the Arctic whale, this animal is big, and lives in cold waters so its metabolism is slow. The record age for bowhead is 211 years.
Some endoliths have lifespan as long as 10000years.
the lacteal is responsible for the transport of
A. Fats
B. Blood
C. Protons
D. carbohydrates
Answer:
Lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestines. The lacteals merge to form larger lymphatic vessels that transport chyle to the thoracic duct where it is emptied into the blood stream at the subclavian vein.
hope it helps
Which graph represents selection that may lead to reduced variation
in a population?
The frequency graph represents selection that may lead to reduced variation in a population.
helpppppppppppppppp meeeeee plzzzzzzzzzzzz
Answer:
Im not a 100% but i think it's option C, if not then it has to be B
Hope this helps!
Describe how the lizard population is changing
Answer:
Each time lizards colonized an island, they evolved into many of the same forms. .Other lizards adapted to life among the thin branches lower down on the trees, evolving short legs that help them hug their narrow perches. Still other lizards adapted to living in grass and shrubs, evolving long tails and slender trunks.Lizards are low on the food chain. Providing protection from their natural predators ensures their continued existence. Plant bushy perennials, create a rock or brush pile or use man-made items like stacks of bricks or pipes.
What is the structure labeled A?
non living martix . Lacunae . cartilage. onondrocyte
I NEED HELP PLEASE ANSWER FAST
A population of wolves migrates north in search of food. As the wolves travel, they enter a region that has long, snowy winters. Some of the wolves have an allele that gives them white coats. This makes them better able to sneak up on prey.
1. Which type of wolf is selected for in this new ecosystem?
2. Has genetic diversity helped or hurt the survival of the wolf population? Explain.
What effect do biological washing powders have on the skin?
Answer:
Biological washing powder and liquids contain enzymes. These help to break down fat, grease and proteins to get clothes clean. While enzymes are great for getting rid of stains, they can damage wool, silk and other materials. Many people also find that they aggravate eczema and other sensitive skin conditions.
Explanation:
Answer:
The hysteria surrounding biological detergents in the UK led to claims that it can lead to or exacerbate such conditions as “erythema, pruritus and eczema.” Despite this, the review finds no evidence of any harmful effects to skin from bio washing powders and detergents
please answer this for me
the answer is D !!!!!!!
Answer:
maco shark
Explanation:
It is a fast speed-swimming shark that has been called “the peregrine falcon of the sharks” in allusion to the fastest bird in the world. It is considered an animal dangerous to humans because of the speed which can attack and its ability to jump into the fishing boats.
What is one example of an adaptation an organism could have that would
increase its chance to survive?
Answer:
some physical adaptations that have structurally modified animals to improve their chances of survival include webbed feet, sharp claws, large beaks, wings, feathers, fur, and scales.
Explanation:
La coordinación nerviosa controla funciones de sensibilidad y respuesta inmediata ante los estímulos recibidos. Una de las funciones primordiales de la médula espinal se concentra en:
a)regular la temperatura corporal
b)controlar el sueño y la vigilia
c)el arco reflejo
d)la memoria
A student wanted to determine the evaporation rates of three liquids. She placed 50 mL of each
liquid outside for an hour on the same day and then measured how much liquid evaporated. Which
would improve the validity of this investigation?
A. Put all three liquids outside at the same time
B. Have 2 students work
Ctogether on the investigation
Change the time for Liquid 3 to 7:00–8:00 PM
he amount of liquids used
Answer: I believe its C
Explanation: 2 and 3 are the same times
Its better to change the time to get different results.
easy biology question below first correct answer gets brainliest
Answer
B
Explanation:
if,k
Answer:
the answer is ....C
.........
What percentage of ozone is contained in the stratosphere? a. 10% b. 50% C. 80% d. 90% Please select the best answer from the choices provided
Answer:
About 90% of the ozone in our atmosphere is contained in the stratosphere
Explanation:
Answer:
About 90% of the ozone in our atmosphere is contained in the stratosphere
Explanation:
What do hypothesis, theories, and laws have in common ?
