I believe that in this community the tadpoles are: the primary consumers. A n ecological community is the set of all populations of all species found in a given place. Primary consumers are mainly herbivores which feed on plants; which are the primary producers of all the energy in an ecosystem. In this case the tadpoles eat algae (primary producer) thus they are primary consumer.
Answer is D.
Waste products from metabolism are carried by the circulation to the kidneys, which filter them out if the blood to be excreted in urine.
It does in fact that's really what natural selection is all about it uses the characteristics that would better help the organism survive therefore making the species thrive
The heart<span> is at the centre of your circulatory </span>system, which is a network of blood vessels that delivers blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. In other words, it supplies oxygen and nutrients to our bodies by working with the respiratory system<span>. At the same time, the </span>circulatory system<span> helps carry waste and carbon dioxide out of the body. Hormones — produced by the endocrine </span>system<span> — are also transported through the blood in the </span>circulatory system<span>.
Hope this helps xox</span>
I think because humans have sweat glands in their skin that help cool the body by evaporation. Dogs don't have sweat glands but they have extensive blood vessels in their tongues that allow for heat to transfer. Panting helps move air across the tongue which carries away heat from the dog's blood.
