spawning gravel
Sorted, clean gravel patches of a size appropriate for the needs of resident or anadromous fish.
Dictionary > Spawning gravel
You will also like...

Plant Cell Defense
Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

Chromosomes X and Y and Sex Determination
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

Still Freshwater & Plants
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

A Balanced Diet – Carbohydrates and Fat
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

Photosynthesis – Photolysis and Carbon Fixation
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

Sugar Homeostasis
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..