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Ecosystem In A Bottle Lab Report

1073 Words5 Pages

Ecosystems in a Bottle
Purpose:
To develop a model to describe the cycling of matter and the flow of energy among living and nonliving parts of an ecosystem.

Hypothesis: Aquatic: If the snails and shrimp eat the hornwort, then the hornwort will die.
If the snails, shrimp, and daphnia are in the water and the plant is dead, then the water will become murky. Terrestrial:
If the worms keep decomposing the soil, then the grass will grow to be very tall.
If the worms keep decomposing the soil, then the soil will lower.

Materials:
1,000 mL tap water
Sprig of hornwort
1 freshwater shrimp
2 freshwater snails
Daphnia
12 cm of potting soil
Seed of grass
1 earthworm

Procedure:
Pour 1000 mL of water in the aquatic chamber.
Put the aquatic …show more content…

I found a shrimp. Only one though, I think everything else is dead.

2/24
Terrestrial Chamber

Aquatic Chamber
The grass is still growing very tall.
The grass will keep growing till the last day.

I can barely see through the water now.
The last shrimp will die soon and our aquatic chamber will have nothing living.

2/27
Terrestrial Chamber

Aquatic Chamber
The grass stayed the same as Friday, I think it has grown it’s tallest.
The soil will dry out.

The paper towel ripped off, bringing no water up to the Terrestrial Chamber.
The water is terrible, I can’t see anything but dead creatures.

ITS
THE FINAL
DAY!!!!!!!!!!!!!!

Quantitative: The grass seeds stayed at 0 cm for two days. On the third day it grew to 1.5 cm. Then it went on to grow from 18.5 cm, to 20 cm, to 25 cm, to 28 cm. After growing up to 28 cm, it stayed the same till the day. The water started out as 13.5 cm and stayed the same for the rest of the testing days.

Grass Height Each Day
Grass
(cm)
2/14
0 cm
2/15
0 cm
2/16
1.5 cm
2/21
18.5 cm
2/22
20 cm
2/23
25 cm
2/24
28 cm
2/27
28 cm

Water Height Each Day
Day
Water Level Height (cm)
February 14, 2017
13.5
February 15,

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