what is the source of all energy in a food web?

Answer 1

all food webs base animals eat plants which grow from the sun

Answer 2

the sun, although I think even the most efficient collectors (plants and plankton) of this incoming solar energy only collect maybe 30% of the total... the rest is reflected or absorbed by the plant's sweat and is evaporated as heat trapped in water vapor.

The only source of food for every animal on the planet is by eating plants or eating a creature that got ITS energy from plants. There are no known creatures with natural solar panels on their backs.

Each time an animal eats a plant, it is consuming energy to do so... that energy is "lost" as it gets converted into other means and therefore, an animal can only at most pass on about 50% of the energy it ever took in to the next animal.

Example: a caterpillar eats a leaf that retained 30% of the energy it could have retained. The caterpillar is getting the full 30% but half is lost to moving around the leaf and chewing. When a bird comes along and eats the caterpillar, it only gets 15% of what the leaf originally collected. When a cat pounces on the bird, it can only ever get about 7.5% of what the leaf originally produced. When a coyote eats the cat, it only gets 4.25%. ...and on it goes... but the further it goes, the laws of diminishing returns kicks in and suddenly the increasing body size of the predator can no longer be supported by the balance between looking for food/eating food and the energy return from the food it takes in. That is why food chains invariably stop.

Answer 3

the first source of energy is the sun. the second is the producers in a food web since it provides herbivores with the food they need to survive. then comes the first consumers which eat the herbivores. lastly comes the second consumers which eat the first consumers. so the two main sources are the sun and the producers.

Answer 4

Most food webs start with the sun.

There are a number of exotic deep sea vent chemotropic based food webs that are based on the energy released from chemicals that come from the volcanic vents.

;-)

Answer 5

The source of all energy is the sun. Except for the minerals in the soil, they were formed at the beginning of the solar system.

Answer 6

McDonalds

Answer 7

McDonalds

Answer 8

SUN- solar energy by nuclear fusion

Answer 9

fat. = 9 potential (approx 37 killojouljs) protein & carbs = 4 potential (approx 17 killojouljs) so fat are the sole precise form of potential. thats why animals and human our bodies start as much as redesign a large form of the factors fed on into fat on the comparable time because it is going by potential of prolonged instructions of starvation.

Answer 10

The sun!