During this process, stomata on a plant's leaves<span> and stems open to absorb carbon dioxide from the air and in return release oxygen. Each time a </span>plant<span> opens </span>its<span>pores, some water escapes. This is called transpiration. ... So </span>desert plants<span> have acquired special adaptations that help them reduce water loss</span>
Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery.
Keystone species are species
whose roles have a large effect on the types and abundance of other species in
an ecosystem. Keystone species are important in the ecosystem as they help to
determine the whole ecosystem and without them, the ecosystem would be different
or stop to be in existence. Almost all animals that have a significant impact
on the food webs are examples of keystone species.
