Fresh water is any body of water with a low salt concentration. Organisms in fresh water various challenges which includes; Osmotic concentration such that fresh water is permanently dilute and most cells cannot function at this concentration of ions. Varying temperatures, variation in oxygen levels and reproduction and life cycle due to permanence of habitat and physiological difficulty of regulating osmotic concentration in larvae and juveniles.
Pectoralis minor is the muscle which limits scapular upward rotation, posterior tilting, and external rotation when under excessive passive tension.
<h3>What is Pectoralis minor?</h3>
This muscle is found below Pectoralis major and originates from the middle ribs to the scapula.
When under pressure this muscle limits the various types of movements which are mentioned above.
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Answer:
A. Gravity
Explanation:
The strong gravity, or "Pull" of the Earth is what keeps the moon in orbit.
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<span>The endoplasmic reticulum assembles components of the cell membrane. And because the question states that it has ribosomes attached to it, the answer would be the rough endoplasmic reticulum.</span>
A. endoskeleton
Endoskeleton is not a characteristic of Arthropods that has attributed to their diversity and success. Endoskeleton is defined as inner characteristics of the skeletal feature of an organisms such as bears, humans, fish and etc.
Exoskeleton on the other hand is the trait by which arthropods posses. It is skeletal feature that is described outside or is extrinsic, this is evident as crabs have their skeletons outside of their body.