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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.
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What is a scientific theory? The sentences above help to describe a scientific theory. One sentence is not quite
MAXImum [283]

Answer:

Original sentence: When new information does not support a scientific theory, the theory  may be revised or sometimes rejected.  

New changed sentence: <em>When the results of the experiment do not support a hypothesis, the hypothesis must be revised or rejected to state a new scientific theory.</em>

Explanation:

The scientific theory is a conceptual framework used to explain facts or phenomena and to make predictions.

The theory is fundamental to science because it allows scientists to organize and understand observations.

The construction of a theory begins with a hypothesis. The scientist believes that a phenomenon occurs in a certain way, so he/she performs observations under the scientific method to prove that his/her hypothesis is valid or not valid. The systematization of the observations and the empirical data collected might derive from a scientific theory that explains the analyzed phenomenon.

A scientific theory is a knowledge that has been contrasted in several ways.

3 0
3 years ago
Imagine that plaque uniformly coats the walls of the blood vessel in the diagram. Based on the diagram, what is the reduced area
tatiyna

Hello. You forgot to put the image that complements this question.

The image is attached below:

Answer:

A = 38.465.

Explanation:

To arrive at the result you will have to perform a very simple calculation, using the fromula shown in the question above.

First, it will be necessary to find the diameter of the figure, to

 therefore, you will have to divide, which will result in 3.5.

You can now replace the values in the formula: A = (3.14) (3.5) ² = (3.14) (12.25)= 38.465.

5 0
3 years ago
1. A fossil is determined through radioactive dating to be 1.5 million years old. This is an example of *1 point
dedylja [7]
C)Fossil Aging, I think...
        ....Hope it helps, have a good rest of the day:)
7 0
3 years ago
Read 2 more answers
PLEASE ANSWER QUICK!!
ValentinkaMS [17]
I believe the ecosystem
8 0
4 years ago
Which phase of the moon follows the first quarter moon?
kow [346]
This next phase is a Waxing Gibbous. Hope this helps!
3 0
3 years ago
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