1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alisiya [41]
3 years ago
13

1. Why do scientists use the scientific method? *

Biology
2 answers:
Marysya12 [62]3 years ago
8 0

The purpose of using the Scientific Method is 1, 2, 4, 5




outro; live

jeka943 years ago
4 0

1. Answer: to answer questions about the natural world

The aim of scientific method is to answer a question that the scientist have. To answer the question, the scientist need to design a research or observation. If the research is flawed, the result might not match with the scientist aim and the conclusion will be wrong. Scientific method can be used to help design the research so it will have less flaw


2. Answer: fertilizer

The student wants to determine the effect of a certain brand of liquid fertilizer on the growth of ivy. The fertilizer are hoped to influence the growth of the ivy. Independent variable is the variable that hoped to influence the dependent variable. So, the independent variable would be fertilizer.

3. Answer: soil; light

Control variable is the variable that could influence the independent variable, but doesn't want to be observed. Control variable should be made same so it wont influence the result.  In this case, the plant use the same amount of soil. The plant also put in front of a same window, so they should get the same amount of sunlight.


4. Answer: Humidty

The scientist wants to determine if humidity affects chirping in crickets. The humidity hoped to affects the chirping in crickets. Independent variable is the variable that hoped to influence the dependent variable. So, the humidity is independent variable while the number of chirping is the dependent variable.

5. Answer: dependent variable

The scientist is testing the efficiency of various microwaves by measuring the temperature of water. The microwaves is hoped to influence the temperature of the water. So, the temperature would be the dependent variable of the experiment and the microwaves will be the independent variable


6. Answer: water; air; soil


Abiotic factor consist of factor that made of non-living things. Water, air and soil is not a living things. Animals like elephant should be clearly living so they are biotic factor. Grass and tree could not move freely like animal and hard to determine if still living or not, but they should be considered as living thing.

7. Answer: an alligator submerges itself under water to stay cool in the summer; an alligator suns itself on the shore to raise its body temperature.

If a bird picks food from alligator teeth, it would be interaction of biotic factor with biotic factors. Alligator trying to control their body temperature by sunbath or submerge would be interaction between abiotic factor(sunlight, water) with biotic factor(alligator). Oxygenated water is interaction between abiotic factor(water) with abiotic factor(air/oxygen).

8. Answer: strong adhesion

Water has high heat capacity  which makes it temperature hard to changes. It will need more energy/heat to change the temperature of water when compared to air. Adhesion of water makes it could stick to other things while cohesion makes the water stick to itself. The force that cause molecules of water to stick to the sides of a drinking straw would be adhesion.

9. Answer: 14

oxygen has atomic number 8 and atomic mass of 14. The atomic number show the amount of proton and electron that the oxygen has while the atomic mass show the sum of proton and neutron. The number of protons and neutrons in stable oxygen would be 14, same as the atomic mass.

10.  Answer: protons; neutrons


Protons and neutrons could be found in the nucleus of the atom while the electron is orbiting in the outer layer. The mass of the atom mostly contributed by the protons and neutrons while the electron is too small and their mass is negligible.

11. Answer:  ions are atoms with extra electrons or too few electrons; isotopes are atoms with extra neutrons or too few neutrons; isotopes are radioactive

When an atom has less electron it will be called cation while the atom with more electron called anion. Isotopes have different number of neutrons which make some of them become radioactive. Isotope should have the same number of electrons.

12. Answer: it has 4 valence electrons, so it can make 4 strong bond with other atoms.

Carbon made most of the organic compound. Carbon can be found in carbohydrate, protein and lipid. It has 4 valence electrons which enable 4 slot of covalent bond with oxygen and hydrogen which allow those 3 molecule to have many type of bonds.

13. Need image to answer

14. Answer: The compound has different properties, because the bonds cause structural changes of the elements

Compound will have different properties compared to the element that makes it. Table salt is made of natrium and chlorine atom. The natrium element will explode when exposed to water while natrium chloride is found most in the sea.

15. Answer: exothermic

Reaction that produce energy will be called exothermic while reaction that absorb energy called endothermic. If the reaction cause light and explosion, then the reaction should produce energy and called exothermic. The ion or compound should have no relation in this.

You might be interested in
A cross was made between a white male dog and two different black females. the first female gave birth to eight black pups, and
Svetradugi [14.3K]

In this case, the black body colour is the dominant one. The white dog is  homozygous recessive.

As the cross between the black female 2 and the white male results in all black pups. This means that the all the offsprings are heterozygotes and the Female 1 is homozygous recessive having a BB phenotype (where B codes for dominant allele).

As the cross between the black female and the white male results in four white and three black pups. This means that the all the black offsprings are heterozygotes, and the white ones are homozygous recessive and the Female 2 have a dominant and 1 recessive gene, and is a hetrozygotezygous recessive having a Bb phenotype (where B codes for dominant allele and b codes for recessive allele).

4 0
3 years ago
Do I have these correct
guajiro [1.7K]
Yes, you do because you did.
5 0
3 years ago
An EMT reaches the scene of a car accident, disinfecting and dressing a man's head wound that has been bleeding profusely. Upon
laila [671]

Answer: hepatitis C.

Explanation:

Based on the information given in the question, it's most likely that the person has been exposed to hepatitis C.

Hepatitis C is an infection that is caused when a virus attacks the liver which leads to the inflammation of the liver. Since the person reaches the scene of a car accident, it's possible that the EMT got in contact with the contaminated blood. In this case, he most likely have been exposed to hepatitis C.

6 0
3 years ago
Which explanation best identifies what Cell A and Cell B are?
stealth61 [152]
A cell is a living organism
6 0
3 years ago
The photograph shows a community. What kind of community is shown?
AfilCa [17]
The community shown is a coastal community
8 0
3 years ago
Other questions:
  • What is layering in vegetative propogation​
    6·1 answer
  • What power lens should he use as a magnifier to see clearly at a distance of 15 cm without wearing his glasses?
    5·1 answer
  • Referring to the body and it's functions
    11·1 answer
  • List the functions of proteins in the text area below.
    10·2 answers
  • One of the major limitations of the information-processing approach to explaining cognitive development is its use of pragmatism
    13·1 answer
  • Select all that apply.
    9·2 answers
  • Which prediction will most likely describe how friction will affect her findings? The distance for Trial 3 will be greater than
    9·1 answer
  • Which cause is most responsible for cystic fibrosis (environmental, recombination, mutation)?
    5·1 answer
  • The cell membrane regulates the movement of molecules in and out of the cell. What other functions does the cell membrane perfor
    13·1 answer
  • An object with a mass of 20 kg and potential energy of 584 J is what distance above the ground
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!