People breathe out Carbon Dioxide and plants use that Carbon Dioxide to carry out photosynthesis. Plants release oxygen as a by- product that people use for cellular respiration.
It is antigen a,antigen b and no antigen
Polyunsaturated fats. The four types<span> have different chemical structures and physical properties. The bad fats, saturated and trans fats, tend to be more solid at room temperature (like a stick of butter), while monounsaturated and polyunsaturated fats tend to be more liquid (like liquid vegetable oil).</span>
<u>Answer:</u>
<em>Predator-prey and herbivore-plant relationships are crucial in shaping communities. </em>
<u>Explanation:</u>
<em>It is the predator species in area that checks the number of prey species in a certain geographical area.</em> More the number of predator species in an area less is the number of prey species in the area.
Similarly the geographical location of preys will depend on the geographical location of predators. <em>Preys tend to flee away from the location of predators. Plant-herbivore relation is also similar.</em>
The number of herbivores checks the number of plants in an area. In the absence of herbivores and predators the <em>number of prey species and plants will exceed beyond limit. </em>
