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podryga [215]
3 years ago
6

Can someone help me with this please thank you.

Biology
1 answer:
zlopas [31]3 years ago
3 0

Answer:

a.Side with a lower consitration of squares.

b.Transport protien.

c.Energy imput from the cell.

d.Plasma membrain.

e.Side with a higher consitration of squares.

I think.

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1. Why do scientists use the scientific method? *
jeka94

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.

4 0
3 years ago
Read 2 more answers
Because of global climate change, arctic landscapes and ecosystems are changing rapidly and perceptibly, as the residents of New
olasank [31]

Answer:

The correct answer is D)

Decades ago, the U.S. government mandated that they and other Alaskan natives abandon a nomadic life based on hunting and fishing for sedentism.

Explanation:

Sedentism is simply the practice of settling in one geographical location for a long time.

Many governments encourage this to ensure that agricultural systems become developed and more sustainable as was the case in Alaska.

Other governments in some part of the world are also in support albeit for a different reason such as security of lives and property.

Cheers

7 0
3 years ago
Zebrafish (Danio rerio) is an important model organism in the field of genetics. One of the first mutant genes to be studied in
BigorU [14]

Answer:

b

Explanation:

<em>Let the wild type trait, the silver-white, be represented by </em><em>A</em><em> allele and the mutant trait, the golden color, be represented by </em><em>a</em><em> allele.</em>

Heterozygous wild-type male fish would be Aa

Golden female fish would be aa

     Aa    x    aa

  Aa   Aa    aa    aa

2/4 Aa = silver-white

2/4 aa = golden color

<em>Hence, the percent likelihood of golden offspring is </em><em>2/4 or 50%.</em>

The correct option is b.

5 0
3 years ago
Which evidence suggests that Earth's current warming trends are different
Scilla [17]

Answer:

D the current changes are mush smaller than in the past.

6 0
3 years ago
A study on the impacts of urbanization was performed for the town of Fairvale. The study showed a decline in biodiversity over t
san4es73 [151]

Answer:

A & C

Explanation:

usa test prep

4 0
3 years ago
Read 2 more answers
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