What is a protozoan living in the digestive tract of a flea living on a dog is an example of?

Which one of the following is an abiotic factor?

Which of these take part in symbiosis of lichen?</h2></div>

The population size that an environment can sustain is called the </h2></div>

Two species competing exactly for same resources can not live in the same niche due to </h2></div>

In which interaction does a parasite steal food gathered by the host?

Which letter is used to designate the death rate (Mortality)?

Explain commensalism and mutualism with example.<span><br> </span></h2></div>