Zooxanthellae and coral have a mutualistic symbiotic relationship. Coral obtains oxygen and organic products from the algae that live within them. These algae also help the coral remove waste. The zooxanthellae obtains needed carbon dioxide and needed nutrients from the coral.
To create awarness among peopl it is iportant to address pollution concern
Answer is D. Nitrogen fixation.
The root nodules of some plants contains Rhizobium bacteria which fixes atmospheric nitrogen into soil as Ammonia. Ammonia is converted into nitrate which is the most usable form of nitrogen in the soil. Nitrate is absorbed by the roots of the plants, from plants nitrogen reaches to animals when they eat plants.
Answer:
1. The need to stay afloat
2. The need to eat and avoid being eaten
Explanation:
<span>100 cm 1,000 cm = 1 mm 10 kg = 1 g</span>
