Biology High School

Plz help with 8th science

Plz Help With 8th Science

Answers

Answer 1

Answer:

change in temperature

change in color

noticeable odor after reaction has begun

formation of precipitate

formation of bubbles

Answer 2

Answer: Check off boxes 1,3,4,6,7

Explanation: A chemical change occurs when a substance combines with another to form a new substance.

Related Questions

Variety is important within populations because

Answers

Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. ... Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.

Low genetic diversity within a population of Coachella Valley fringe-toed lizards can lead to _____. faster range expansion for the species lower mortality rates higher birth rates higher rates of birth defects and increased susceptibility to disease

Answers

Answer:

increased susceptibility to disease

Explanation:

The correct answer would be increased susceptibility to disease.

Low genetic diversity within a population means that there are few alleles in the gene pool of the population. The implication is that the population will not be able to evolve in response to disruptive influences. There are few alleles available for natural selection to act on. Hence, the population is more susceptible to external influences such as disease outbreak.

what question is trying to be answered? Monday, Wednesday, and Friday Paul runs at 2pm for 20 minutes each time and records his distance. Tuesday, Thursday and Saturday he runs at 9pm for 20 minutes each time and records his distance. Paul records his distance ran for 8 weeks. *EXTRA POINTS*

Answers

Answer:

how many minutes did he run in 8 weeks

Explanation:

During the process of the reformation of rock, ___________ amount of material stays the same as its forms change. a. a large b. a small c. a significant d. the total

Answers

Answer:

c. a significant

Explanation:

There are three types of rocks formations as igneous, metamorphic, and sedimentary rock. The process that is responsible for the change form one form to another include metamorphism, crystallization, and sedimentation along with erosion. These collective processes are known as rock cycle.

Hepppp!!! The American curl is a type of cat with curled ears. A single gene with two alleles codes for the ear-shape trait. The dominant allele (R) codes for curled ears, and the recessive allele (r) codes for straight ears. If two curled ear cats produce a kitten that has straight ears, what is the genotype of the parent cats? a Rr x Rr b RR x RR c RR x Rr d Rr x rr

Answers

Answer:

Rr Rr

Explanation: The parents of the cat have to have an R allele to be a curled cat, but they can't be RR because that is a dominant gene, meaning that the recessive trait cannot happen. This means that the parents have to have a recessive trait, which means that they are heterozygous.

What characteristics must be true of well-stated hypothesis

Answers

A well thought out hypothesis should be testable and falsifiable.

Drinking water helps your body maintain​

Answers

Answer:

Drinking water helps maintain your body

Answer:

the balance of body fluids.

Explanation:

The ability to have these body fluids is very important as they help digestion, absorption, circulation, creation of saliva, transportation of nutrients, and maintenance of body temperature. Drinking water also helps your memory, health, and recovery.

what does the endosymbiotic theory explain

Answers

The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes. Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission.

6. The maintenance of a stable internal condition in spite of changes in the
external environment is

Answers

homeostasis

(that's what i remember)

What would most likely happen if an error occurred when RNA was receiving coding information? Proteins would be formed incorrectly. DNA would form incorrectly. RNA could not form a correct blueprint. The incorrect amino acid would form.

Answers

Answer:

Proteins would be formed incorrectly  

Explanation:

This is because the mRNA codon sequence would be altered, which is responsible for protein formation.

Answer:

Proteins would be formed incorrectly.

Explanation:

Need help i need 3 easy sentence

Answers

He is in his office.He sat under a tree.There is someone at the door.

Question 19 of 25
In the some areas of Africa, droughts have caused clean drinking water
sources to dry up. How would technology most likely be useful for this
region?
A. Development of transportation
B. Purifying dirty water
C. Development of high-speed communication
D. Caring for an aged population
SUBMIT

Answers

A. Development of Transportation:)
B. Purifying dirty water ! - because if the drought dried up the clean drinking water sources, you need technology to find a way to clean the dirty water and purify it

what is meiosis and where does it happen

Answers

Answer:

Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes (sperm and eggs).

Smita is experimenting with how a paper airplane's shape affects the
distance it will fly. Which action is the result of her logical reasoning?

Answers

Answer:

I'm looking for the answer too but unless the person has seen the question and answer choices no one can help you because you don't have answer choices.

Explanation:

Hope this encourages you or notifies you to put answer choices.

Answer:

The answer is D the same type of paper

Explanation:

List the cavity in which each of the following organs is located. Brain - Stomach - Lungs - Liver - Bladder - Spinal cord - Heart - Ovaries - Uterus - Esophagus - Small intestines - Pancreas -

Answers

Answer:

The human body contains following body cavities known as The dorsal body cavity (vertebral cavity), ventral body cavity (thoracic cavity, abdominal cavity, pelvic cavity

The brain - vertebral cavity of the dorsal cavity

Lungs - thoracic cavity

Liver - abdominal cavity

Bladder - abdominal cavity

Spinal cord - vertebral cavity

Heart - thoracic cavity

Ovaries - Pelvic cavity

Uterus - Pelvic cavity

Esophagus - abdominal cavity

Small intestines - abdominal cavity

Pancreas - abdominal cavity

Answer:

A, B, C, and F

Explanation:

For a scientist, assessing the validity of information requires _______.

Answers

Answer:

Im positive the answer would be experimentation.

which does food provide to organisms? homeostasis (A) shelter (B) energy (C) air (D)​

Answers

Answer:

energy

that's all you need or??

Answer:

C energy

Explanation:

PLEASE HURRY!!! Radiation has caused a mutation in the DNA of a bird. This change will most likely be passed on to its offspring if the mutation occurs in its

A. Sperm cell
B. Feather cell
C. Skin cell
D. Nerve cell

Answers

Answer:

A. Sperm cell

Explanation:

Mutations are genetic alterations in the nucleotide sequence that form the genome of a given organism. In general, mutations have negative effects (i.e., mutations are generally deleterious), but sometimes these genetic changes may be adaptive (and therefore beneficial). Somatic mutations are genetic alterations acquired by somatic cells (they can not be inherited by the offspring), while germline mutations occur in gametes (sperm and egg) and they can be inherited by the offspring, thereby affecting the progeny of the organism.

Which best describes the relationship between science and technology?
1
O Technology uses scientific knowledge to create solutions to real-world problems.
O Science will advance quicker than technology.
Science and technology advance only occasionally.
O Technology is not often used in science.

Answers

Answer:

The first one: Technology uses scientific knowledge to create solutions to real-world problems.

1) technology uses scientific knowledge to create solution to real world probables.!! (;

is a lion stalks captures and eats a cape buffalo predation or parasitism

Answers

Answer: Predation

Explanation: this is because stalking is the act of predation because a parasitism is were the animal slowly kill the animal or does not kill the animal at all

Which spots attract many tourists to the Blue Ridge region?

Answers

Answer:

Amicalola Falls , Brasstown Bald, Springer Mountain , and Tallulah Gorge.

Arrange these steps in the nitrogen cycle in the correct order to explain how nitrogen from the atmosphere cycles through the other spheres on Earth.

Answers

Answer:

I really don’t know all I know is nitrogen fixation is first and ammonification is fourth and after that is denitrification idk what the other four are

Explanation:

how can we model phenomena in the biosphere?​

Answers

This is the answer
Ur welcome

Jayden used the multiplication table below to determine that 8:14 is equivalent to 24:42​

Answers

Answer: They are both equivalent.

I don't see a multiplication table down below, but I get what you're trying to answer.

Explanation:

8:14 and 24:42 are both the same as 8/14 and 24/42. Multiply both the denominator and numerator by 3 since that's how you solve equivalent ratios. If you try 1 and 2, they will not work. 8*3=24 and 14*3= 42, therefore 8:14.

I hope this helps

What is a semantic map?

Answers

Explanation:

Semantic Mapping, What is it? How does it work?:

Semantic mapping is the structuring of information in graphic form. It is not a new process, and has been known as concept mapping, webbing, networking and plot maps. “Semantics” refers to the concepts or ideas conveyed by words, and semantic mapping is a process through which students visually depict the ways ideas are connected. Hope this helps!


Which units can be used to measure length or distance?

Answers

Answer:

in metric system, millimeters, centimeters, meters, kilometers are the most often used units

US customary system, inch, foot, yard, mile are the most often used units

please helppppp if greenhouse gas concnetration is low, will temperature be low?

Answers

No it should not be low because that should be the opposite way around for it to be low

Answer:

yes me boi

Explanation:

Why is this a good root to describe
pseudo stratified columnar epithelium? |

Answers

A water molecule is formed when two atoms of hydrogen bond covalently with an atom of oxygen. ... The oxygen atom attracts the electrons more strongly than the hydrogen. This gives water an asymmetrical distribution of charge. Molecules that have ends with partial negative and positive charges are known as polar molecules.

HIV, the virus that causes AIDS, is transferred through body fluids. People once thought that HIV infections were untreatable. Now, many people live relatively long and healthy lives despite being infected with HIV.

A. develop new medicines.
B. treat inherited diseases.
C. change societal attitudes.
D. formulate new laws.

Answers

Answer: develop new medicines

Explanation:

What best describes the above question is the development of new medicines

HIV infection is caused by the human immunodeficiency virus and can be can gotten from contact with infected blood or sex. A lot of people get infected virus by having unprotected sex with people who has HIV/AIDs and also via sharing needles.

The production of new drugs can help mitigate the effects of HIV/AIDs in humans. Some companies are already involved and through new medicines, it cannot be pass to offspring.

Conclusively, we can say that What best describes the above question is the development of new medicines

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Which element is present in all ORGANIC molecules?

Answers

The indispensable chemical element is carbon.
Other Questions
Consider these numbers, ordered from least to greatest. Negative 1.8, negative 1 and one-fourth, negative 0.2, blank, one-half, 90 percent A number line going from negative 2 to positive 1. Which values could correctly fill in the blank? Select all that apply. 10% 1 -0.1 -1 One-fourth Bottoms Up Diaper Service is considering the purchase of a new industrial washer. It can purchase the washer for $3,900 and sell its old washer for $1,200. The new washer will last for 6 years and save $1,100 a year in expenses. The opportunity cost of capital is 19%, and the firms tax rate is 21%. a. If the firm uses straight-line depreciation over a 6-year life, what are the cash flows of the project in years 0 to 6? The new washer will have zero salvage value after 6 years, and the old washer is fully depreciated. (Negative amounts should be indicated by a minus sign.) b. What is project NPV? (Do not round intermediate calculations. Round your answer to 2 decimal places.) c. What is NPV if the firm investment is entitled to immediate 100% bonus depreciation? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Assume that cellular uptake rates and drug delivery rates of compounds 1 and 2 are identical. If the proposed mechanism of sensitization by Compound 1 is correct, what cancer cell treatment protocol is most likely to produce the most apoptosis 20 h after treatment?A. pls someone, pls explain aswell !! Which of the following is a true statement about the equator Describe two games that are typical of the gaucho games Dr. Foster was studying the effects of zinc on the common cold. She hypothesized that zinc would shorten the duration of the common cold. She conducted a study in which patients suffering from a cold were given daily doses of either zinc or a placebo and the amount of time it took for them to feel better was measured. whats the independent variable: whats the dependent variable: whats the constant variable: whats the control group: whats the experimental group: Name the three angles of the triangle Vanessa and Michelle must decide how to divide 16 marbles among themselves. Which graph represents this situation? (Sorry for the quality) Answer two questions about Equations A and B:A. 5= -2(x - 1)B. 5 = -22 + 21) How can we get Equation B from Equation A?Choose 1 answer: Which expression is equivalent to StartRoot negative 80 EndRoot? Negative 4 StartRoot 5 EndRoot Negative 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot Need help as soon as possible 24x squared 44x + 12 please help!! what is the slope and the y intercept? What is the name of a map that maintains accuracy in the size (area) of continents but distorts the shapes of the continents? What is common to both physicaland chemical properties? List asmany similarities as you can. C=82.76% H=17.24% Molecular formula ??? How can you represent patterns from everyday life by using tables, expressions, and graphs? short note on the reign of terror suppose that a computer chip company has just shipped 10,000 computer chips to another computer company. Unfortunately, 20 of the chips are defective. Compute the probability that two randomly selected chips or defective using conditional probability