B hope this helps a lot :)
Answer:
In the experiment conducted by Alisha to test the effect of different materials on the melting rate of ice, the dependent variable is the mass of the ice, and the independent variable is the type of cover material.
Explanation:
During an investigation or experiment, the dependent variable is the one whose changes will be studied, while the independent variable is able to influence the changes of the dependent variable.
In the case where it is wanted to <u>measure how different cover materials affect the rate of ice melting</u>, the dependent variable is the mass of ice and the independent variable is the coverage material, capable of affecting the time it takes for the ice to melt.
Learn more:
Dependent and independent variables brainly.com/question/967776
Lotions, body cream, oils
Structure of Water and Hydrogen Bonding
- living systems depend on water and its polarity as well as hydrogen bonds
- hydrogen bonds result in the cohesion: ability for water molecules to stick together through hydrogen bonds, adhesion: ability for polar part of water to stick to other polar surfaces and surface tension: water's attraction to each other in bonds rather than air so have tension on surface
- cohesion of water is the Attraction between molecules of the same substance.
- Hydrogen bonds between the oxygen of one water molecule and a hydrogen of another water molecule.
- Adhesion of water is the property of water to attract with other substance.
To know more about Hydrogen Bonding visit : brainly.com/question/10904296
#SPJ4
Answer:B6 and B12.
Explanation:
Homocysteine is an amino acid produced from demethylation of methionine.The later is an amino acid needed in the body which must be conserved.
In order to conserve it ,Homocysteine is recycled in a specific pathways which inovles activities of Vitamin B6 and B12
.Therefore deficiency of these vitamins leads to elevated levels of Homocysteine.
HIGH LEVELS OF HOMOCYSTEINE AFFECT THE ENDOTHELIAL CELLS ;LEADING TO ABNORMAL CLOTTING OF BLOOD.THIS INCREASE IN BLOOD VISCOSITY PUT THE HEART AT RISK OF CARDIOVASCULAR DISEASES.
