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
Inessa05 [86]
3 years ago
6

A student is investigating the affect of different salts on melting points. Four patches of ice of equal size are roped off and

a different type of salt is poured on each, one receives table salt (NaCl), one receives Calcium Chloride (CaCl2), one receives Potassium Carbonate (KCO3) and the fourth receives inert sand instead. Each patch receives an equal amount of salt or sand. What could the student investigate?
Biology
2 answers:
Ket [755]3 years ago
8 0
How the equal amount of different sand or salt is poured on the same size of ice
vaieri [72.5K]3 years ago
7 0

Answer:

Considering that the amount conditions of the ice and salt are controlled and we want to study the melting points.

They can only study the amount of time it takes  it to melt under each different types of salt and sand.

Explanation:

First of all, we need to understand something, they are going to study salt melting point on ice. All of them receive the same amount of ice and salt. Therefore, they can only study the amount of time that each salt takes to melt the ice. Because the dependent variable is the time the ice takes to melt under the effect of different types of salt and sand, while the independent variable is the ice. It is a comparison study without a control group because we are not using one as a base.

You might be interested in
What is phosphorus used in the soil for
Otrada [13]
Phosphorus is, therefore important in cell division and development of new tissue.
It is also associated with complex energy transformations in the plant. Adding phosphorus to soil low in available phosphorus promotes root growth and winter hardiness, stimulates tillering, and often hastens maturity.

Hopefully this helps :)
4 0
3 years ago
A cell under a microscope shows Two daughter cells were formed and they are haploid. Which stage of meiosis is the cell showing?
Nadya [2.5K]

The answer is <span>Meiosis I.</span>



<span>Meiosis is a cell division which results in the reduction of chromosome number by half - from diploid to haploid - in daughter cells. It consists of meiosis I and meiosis II. Meiosis I produces two haploid cells. Meiosis II is analogous to mitosis, so each of these two haploid cells will in meiosis II produce two haploid cells. In total, meiosis results in four haploid cells.</span>

<span>
</span>

<span>Therefore, the production of two haploid daughter cells is in meiosis I.</span>

3 0
3 years ago
Chief cells are found in glands that line the inside of the stomach. These cells secrete large amounts of enzymes to aid in food
kvv77 [185]

The correct answer is: Endoplasmic reticulum.

One of the functions of the endoplasmic reticulum is transport of secretory proteins. Synthesized proteins are transported in vesicles to the Golgi apparatus.

Gastric chief cells have a high rate of enzyme secretion such as pepsinogen and gastric lipase. It is the cell also responsible for secretion of chymosin.


5 0
3 years ago
Read 2 more answers
Determine whether each statement below describes traditional or modern classification.
Scorpion4ik [409]

Answer:

Traditional

Modern

Modern

Traditional

Explanation:

Traditional classification is also known as the Linnaean classification. This type of classification focuses more on the similarities in appearance when it comes to categorizing organisms.

Cladistics, or modern classification organizes organisms into groups based on evolution.

7 0
2 years ago
Read 2 more answers
The diagram shows a normal red blood cell and a shrunken red blood cell, both of which are in salt water.
bixtya [17]

Answer: Water moved from inside the red blood cell into the salt water.

This is because of the osmotic difference between the salt solution and the red blood cell. This means that there is difference in the solute (salt) concentration inside the red blood cell and the salt solution.

Explanation: The salt concentration in the solution is higher than the salt concentration inside the red blood cell, that is, the red blood cell has more water concentration that the salt solution, therefore there will be movement of water from the inside of the red blood cell into the salt solution thereby causing the red blood cell to reduce in size. The movement of water from the red blood cell into the salt solution is to create a balance between the water concentration in the two environments, hence the movement of water from an area of high water concentration to an area of low solvent concentration across the selectively permeable membrane of the red blood cell.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What effect has breast cancer research had on society
    12·1 answer
  • Which molecule do plants use to store extra glucose
    13·2 answers
  • Which characteristic is used to identify an amino acid
    10·1 answer
  • What is the primary difference between savannas and tropical forests?
    9·2 answers
  • Please let me know as soon as possible
    7·1 answer
  • Which choice below represents an organism with two recessive alleles
    7·1 answer
  • Are characterized by being mostly aquatic and microscopic, having zoospores and gametes with flagella.
    6·2 answers
  • The United States Arctic National Wildlife Refuge is a large portion of Alaska that is protected from construction, which would
    7·2 answers
  • Which of the following statements is most true regarding macromolecules and their functions?
    12·2 answers
  • All sensory information, with the exception of olfaction, must pass though the ________ as it travels to the cerebral cortex. ce
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!