A relationship between two organisms where one member harms the other.
Explanation:
An example is parasitism is a tick on a cow. The tick draws blood from the cow for nutrition. However the cow is harmed because the tick denies it of some nutrition and also the tick is a disease vector.
A relationship between two organisms where only one member benefits and the other is unharmed is called Commensalism.
A relation between organism where they all benefit is called symbiosis
Symbiosism can go up a notch where the collective contribution of all the organisms is higher than the sum of the individual benefits is called synergy.
Learn More:
For more on biological relationships check out these;
brainly.com/question/12015788
brainly.com/question/10662634
#LearnWithBrainly
<span>a. direction in which they carry impulses</span>
<span>A gram is a unit of measurement used in the metric system. This is the metric unit used for measuring weight. Liters is the measurement used for volume, and meters is the measurement used for length. All of the other units mentioned are used in the standard measurement system.</span>
The plasma membrane separates the inside of a cell from the outside environment. it is made up of a phospholipid bilayer composed of hydrophilic heads (water loving) And hydrophobic tails ( water hating).
I hope that answer will help u