1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stells [14]
3 years ago
9

Why do ecosystems need a constant input of energy from an external source

Biology
1 answer:
Alja [10]3 years ago
3 0
The producers need energy to sustain life and sustain an ecosystem.
You might be interested in
Which of the following study materials contains self checks
nikdorinn [45]
Most likely showing your work would contain self checks, so study guides?
8 0
3 years ago
Five common materials in your home and their uses​
AysviL [449]

Answer:

Wood for paper, Plastic for Water Bottles, Rubber for wires, Metals for paper clips and copper, zinc and nickel for coins.

Explanation:

5 0
3 years ago
The parietal pleura would represent a serous membrane ________.
CaHeK987 [17]
Lining the thoracic cavity
6 0
3 years ago
Read 2 more answers
A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, she notes the
Anna35 [415]
This plant is probably most closely related to:
Ferns
8 0
3 years ago
Modern taxonomists primarily use which of the following to classify living organisms
-Dominant- [34]

The modern taxonomists classified organisms on the general basis of evolutionary, morphological, and genetic traits

Explanation:

  • Evolutionary relationships provides the phylogeny of evolutionary ancestors and descendants  
  • Homologous structures are structures which look the same but perform different functions , like bones of a human leg compared to bones on a bird's wing
  • Analogous structures have different structure but same function like an insect’s and a bird’s wing
  • Embryo developmental pattern and similar relationships
  • Similarities in DNA and protein sequencing in related organisms

The above basis provided modern taxonomists to classify organisms according to the various disciplines like Genetics, Cytology, Embryology, Physiology, Anatomy and many more.

3 0
3 years ago
Other questions:
  • What are contour lines on a contour map
    11·1 answer
  • How does the story of the scientists
    13·2 answers
  • The coolest and dimmest space objects emit radiation of longer wavelengths than those we can see. A detector for which type of e
    11·2 answers
  • Which ecosystem has the greatest biodiversity?
    9·1 answer
  • Explain how contour farming helps water soak into the ground
    11·2 answers
  • How many laser angioplasty or atherectomy procedures performed annually?
    5·1 answer
  • Pain sensations in the skin, muscles, tendons, and joints that are carried on large nerve fibers are called ________.
    8·1 answer
  • Nina studies an artificial heart model. The model has tubes that supply an electric current to the model. Nina switches on the c
    15·2 answers
  • Which items work to stop bleeding?
    8·2 answers
  • In a population of birds some individuals are born with thicker, stronger beaks than others. This is a trait that is inherited.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!