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morpeh [17]
3 years ago
6

Why are ecosystems not considered “closed” systems?

Biology
1 answer:
geniusboy [140]3 years ago
7 0
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.
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the frogs tongue is anchored in the very front opposite to the orientation and anchoring of humans why is that?
Mice21 [21]
Frog's tongues are attached to the front of their mouths rather than at the back like humans. When a frog catches an insect it throws its sticky tongue out of it's mouth and wraps it around its prey. The frog's tongue then snaps back and throws the food down its throat.
7 0
4 years ago
PLEASE HELP ASAP!! CORRECT ANSWERS ONLY PLEASE!!!
Alexus [3.1K]
Hypothesis is the answer
7 0
3 years ago
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Determination of Caloric Content of Three Foods1. Compare the calorimeter that you built to a bomb calorimeter. How are they sim
yulyashka [42]

Answer:

The answers to both parts (1 and 2) are given below.

Explanation:

1. The calorimeter is similar to the bomb calorimeter in a way that both measure the changes in heat that occur as result of the chemical reaction taking place inside them. They are different in the sense that a bomb calorimeter provides an isolated system with constant volume and pressure, whereas a regular calorimeter allows pressure to equalize with the environment.

2. Carbohydrates are the molecules that break down and provides energy for cellular functions. Whereas, proteins are not meant for the production of energy but for the production of amino acids to function as structural units for protein synthesis. Simply, the breakdown of protein is for the synthesis of more proteins by providing several units of amino acids rather than the production of energy.

5 0
3 years ago
Unicellular cells must carry out ___ of life.(1 point) A. all functions B. a few functions C. a single function D. specific func
Aleonysh [2.5K]

Answer:

all functions

Explanation:

To survive, unicellular cells must carry out all functions.

Hope this helps!

3 0
4 years ago
Read 2 more answers
Sickle cell anemia is produced by a genetic defect in the amino acid sequence of hemoglobin. Persons who are homozygous for this
JulijaS [17]

Answer:

The probability is 1/2

Explanation:

Heterozygous for sickle cell allele is AS

Homozygous allele is SS

AS SS

The offspring formed include

AS, AS, SS, SS

The probability of their children being carriers include

Number of AS/ Total number of offspring

= 2/4 =1/2 or 0.5

8 0
3 years ago
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