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ELEN [110]
3 years ago
11

Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the

following could be an unavoidable source of experimental error?
A.Variation in the strawberry plants


B.The cost of watering the plants


C.Fertilization during the study

D.Length of the study
Biology
1 answer:
Helga [31]3 years ago
5 0

The correct answer is option (A) Variation in the strawberry plants.

When the effect of fertilizer on the growth of two strawberry plants is tested, unavoidable source of experimental error is the variation in the strawberry plants. Variation refers to the deviation or differences from the normal plant which can be due to genetic variation. It is due to change in the DNA sequence. If any one of the two plants being tested show variation, the rate of metabolism differs and changes the growth pattern of the plant. The rate of absorption of water and nutrients is effected which brings change in the growth of the plant and causes an error in the experiment and the result.



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Explanation:

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3 years ago
Describe at least two ways bone functions in protection of the human body
nirvana33 [79]
- helps protect internal organs and fragile body tissues eg. : the cranium protects your brain and eyes and the ribs protect your heart and lungs.
4 0
3 years ago
1. In the table below, identify each invertebrate by matching it with its characteristics.
erastovalidia [21]

Correct matching of invertebrates and its characteristics are as follows:

Sponges are animals which have many cell but no mouth, muscles , heart or brain. They are sessile and can not move from place to place like other animals do, filter feeding animals with an asymmetrical body plan.

Cnidarians are the animals with radial symmetry and stinging cnidocyte cells. These animals consists a special cell cnida which functions in preying catch and defense. example- jellyfish, anemone.

Flatworms are the worm like animal which do not consist a body cavity or coelom. example- fluke and tapeworms.

Roundworms or threadworms are segmented worms that can live in water or land. They consist a body cavity and internal organs. examples- pinworms and hookworms.

Mollusks are the animals which consist mentle, foot and and sometimes a shell. example- octopus, squids.

Echinoderms are the animals which have radial symmetry and an endoskeleton made out of calcareous plate. These animals live only in marine environment.These animals lack circulatory and excretory systems.

Arthopods are the animals with jointed legs and an exoskeleton made out of chitin. example- spiders, shrimps and crabs.



3 0
2 years ago
Which of the following attitudes is NOT important in science?
KengaRu [80]

The attitude that is NOT important in science is <u>b. having a closed mind.</u>

<h3>What is a closed mind?</h3>

A closed mind refers to a person who is not willing to consider different ideas or opinions.

A closed mind cannot engage in scientific inquiries.

Scientific inquiry helps scientists to study the natural world in diverse ways before proposing explanations based on the evidence derived from their scientific activities.

Thus, important attitudes in science include:

  • Curiosity
  • Creativity
  • Skepticism.
  • Honesty
  • Flexibility
  • Persistence
  • Open-mindedness
  • Tolerance of uncertainty
  • Acceptance of the provisional nature of scientific explanation.

But, having a closed mind cannot help in science.

Learn more about attitudes in science at brainly.com/question/1843295

4 0
2 years ago
Read 2 more answers
HOW MUCH WATER DOES A PERSON CONSUME EVERY 1 MONTH????????
Andreyy89
This is really a math question.  If a person is supposed to consume 8, 8 oz glasses of water in one day than you would multiply

8 x 8oz =64 oz.  than 64 oz x 30 days= 1920 oz in one month
because that is a large number you might want to break it down to gallons.

1920 oz divided by 128 oz (one gallon)= 15 gallons in one month.

7 0
3 years ago
Read 2 more answers
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