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ICE Princess25 [194]
3 years ago
5

The main reason that it's important to test only one variable at a time is so that

Biology
1 answer:
Bas_tet [7]3 years ago
3 0
Your experiment has an accurate outcome. The only variable that should be changing is what you have already determined to be the independent variable. All other variables must be controlled (sometimes called constant) in order to preserve the accuracy of the experiment and ensure that the only thing impacted the change in the dependent variable is directly caused by the independent variable.
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3. What is the difference between cotyledons in dicot seeds and the endosperm in monocot seeds?
cupoosta [38]

Explanation:

Monocots contain a single cotyledon in their seed and dicots contain two cotyledons. The nutrients in the endosperm of dicots is absorbed by the two cotyledons. Therefore, a tiny endosperm is found inside the dicot seed. However, the main difference between cotyledon and endosperm is in their function during seedling.

7 0
2 years ago
HELPPPPPP!!! ASAPPPPP!!!!
jek_recluse [69]

Answer:

sea sponge

Explanation:

everything else is symmetrical, sea sponges are known for being whacky shapes and sizes and are never symmetrical

7 0
3 years ago
HELPPPPPP QUICK please!
denpristay [2]

HI~ I hope this helps

(these answers were hand-written meaning I did not copy and paste so, feel free to use the answers freely)

1.

When ecosystems change rapidly the fundamental environmental cycles such as the circulation of water, carbon and nutrients can change as ecosystems depend on them. The usage of factors such as freshwater, carbon dioxide emissions and fertilizer provides a large benefit to humas therefore meaning, that large and rapid changes to an ecosystem could also effect the things we as humans rely on.

2.  

Complex organic matter is broken down by decomposers into carbon dioxide, water etc. The ecosystem is affected based upon the fact that the decomposition of organic matter that is produced by plants, animals and soil organisms is an important process which affects the different important ecosystem processes like nutrient cycling and carbon sequestration.

3. (could have two answers- I recommend the second)

Adaptation- due to the mutation process which results in changes in the structure and function of organisms, these ecosystems would be different as well as unique. The organisms which possesses the traits needed to adapt could then survive as its unique characteristics due to mutation would provide a strong ability

Rise in temperature- If the temperature located on earth was to rise, organisms would have a higher living rate as bacterial life flourishes in warmer temperatures and dies out in colder ones.

4.

~The rapid change of increased food production provides better life sustainability to those living in the ecosystem.

~The rapid change in a large increasing number of organisms could be helpful as they often live of off one another.

5.

~Rapid growth of things such as phytoplankton which cause dead zones are harmful to the ecosystem. Dead zones create zones where too much oxygen is consumed resulting in areas where plants and sea life can no longer survive.

~Whereas the rapid increase of organisms could also be harmful to an ecosystem as the possibility of the organism outnumbering the food sources could become prominent.

8 0
2 years ago
If the ventral root of a spinal nerve were cut, what would be the result in the tissue or region that nerve supplies?
DerKrebs [107]

This would result in whatever effectors that spinal nerve controlled would no longer work; it would be paralyzed

7 0
2 years ago
What does it mean when a compound’s chemical formula does not include any numbers? A. There are only single bonds in the molecul
yaroslaw [1]

Answer:

B

Explanation:

This number that is put in a compound is called a subscript. It is put in front of the symbol of the element being represented. An example is CO₂ which means there are one (1) carbon and two (2) oxygen atoms in the compound.

3 0
2 years ago
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