Because the energy is going to decrease to also nothing and the animals at the top have to hunt more than those closer to the bottom of the food web
An organism that makes its own food is a producer.
A water lily will have more stomata. A desert cactus will have very few stomata, because in deserts plants face water shortage so in order to avoid loss of water cacti have adapted to the desert environment by possessing few stomata.
Threatened species are species <span>which are vulnerable to endangerment in the near future.</span>