Answer:
True.
Explanation:
Pyramid of energy is also referred to as food pyramid and it's a model used to depict the flow of energy from one trophic level or feeding level to the next in an ecosystem. It's a diagram that compares the energy used by organisms at each trophic level of the food chain. The pyramid of energy must never be inverted or turned upside down.
The units used in the construction of pyramids of energy is kilocalories (kcal) or energy per area per time (Jm-²year-¹).
A list of the types of organisms in an eco pyramid are;
I. Producers: these are autotrophs or self-feeders such as plants.
II. Primary (top) consumers: these are herbivores that typically feed on plants such as a goat or deer.
III. Secondary consumers: these consists of carnivores that typically feed or eat flesh such as lion, tiger, cheetah, etc.
IV. Tertiary consumers: these are higher predators such as humans that aren't normally fed on by other organisms in the ecosystem.
In Biology, producers are the living organisms that are capable of manufacturing their own food and as such can provide energy or food for the other living organisms (consumers) in a food web. Thus, producers are mainly known as the foundation of a food web (chain) and are at the top.
A producer gets energy from the sun and converts it into food. The cells found in producers are capable of converting the energy received directly from the sun into food through a process generally referred to as photosynthesis, converting carbon dioxide from the air, water from the soil, minerals and energy from the sun into organic nutrients.
Answer:
The fragrant oranges danced in the trees appearing to be ready
for harvest
Answer:
Explanation:
According Lionel Robbins which gave most acceptable definition as Economics can be regarded as science that studies human behaviour which gives relationship that exist between ends and scarce that means which have alternative uses.
Some of the key words that made it acceptable are ;
✓ Unlimited wants: the wants of human are unlimited, cannot be satisfied completely
✓Alternative use of resource:
✓ Limited means: there are limited human wants , though resources needed to get them satisfied are limited
✓Economising resources:
Tobacco can be used in several ways according to its presentation: inhaled (cigarette, cigar, straw cigarette); snuff; chewed (coil smoke), but in all its forms it is harmful to health. The toxic substances act on the most diverse systems and organs, contain more than 60 carcinogens.
Smoking causes about 50 different diseases, mainly cardiovascular diseases such as hypertension, heart attack, angina, and stroke. It is responsible for many deaths from lung, mouth, larynx, esophagus, stomach, pancreas, kidney and bladder cancer and obstructive respiratory diseases such as chronic bronchitis and pulmonary emphysema. Tobacco lowers the body's defenses and thus the smoker tends to increase the incidence of acquiring diseases such as influenza and tuberculosis. Tobacco also causes sexual impotence.
A system of signs that represent ideas is a language.
