The producers at the beginning of the Earth's food chain are plants.
Answer:
overreacts to an antigen
Explanation:
Allergies to substances are as a result of immunological dysfunction.
The can survive fr a long period of time outside a persons body.
Answer:
Explanation:
The rate of pollination in the field (near the pond with no fish) will decrease exponentially. Because, as the fish population is removed from that ecosystem, the population of dragonflies and larva increases without check because, fish feeds on the dragonflies larva and kept there population in check. Due to this, the population of bees and other pollinators population decline becuase, they are major food source of dragonflies.
Honeybees are the keystone species because it's absence will lead to major changes in the ecosystem.