1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bazaltina [42]
3 years ago
7

A group of students is setting up a test to see whether earthworms prefer rough or smooth surfaces which type of investigation i

s the group doing A.Comparative B. Descriptive. C. Controlled. D. Experimental
Biology
1 answer:
dezoksy [38]3 years ago
7 0

Answer: The answer is A. Comparative

Explanation: The photo shows two different types of soil with the same type of worm. Therefore this it a comparative experiment. Trust me I got this question correct.

You might be interested in
If the integument of an angiosperm seed contains cells with 20 chromosomes, how many chromosomes would you expect to find in the
OleMash [197]

Answer:

30

Explanation:

The seed of an angiosperm is formed as a result of fertilization (fusion of sperm in pollens and the ova from ovary). According to the question, the cells of the seed which will grow into the plant contains 20 chromosomes. Seeds of angiosperms contain a tissue called ENDOSPERM that forms as a result of the unique DOUBLE FERTILIZATION in angiosperms. It occurs when one haploid sperm cell fuses with two haploid polar nuclei to form a triploid endospermic structure that serves as food for the growing embryo in the seed.

Now based on the above explanation, the diploid plant cell with 20 chromosomes will have 10 chromosomes (half as much) in its gametes as a result of meiosis. This 10 chromosomes in each gamete (sperm and ovum) fuses to form a diploid zygote with 20 chromosomes, while one haploid sperm cell (10 chromosomes) also fuses with two haploid polar nuclei (10 chromosomes each) to form a triploid endosperm with 30 chromosomes i.e. 10+10+10.

8 0
3 years ago
Fungi produce many compounds that humans are able to use medically. how can you account for these compounds?
levacccp [35]
None of those options are correct. 

Fungi produce,naturally, antibiotics that will kill or inhibit the growth of bacteria.
This is useful for them to limit competition in their natural environment but it's also useful for us because it will kill bacteria that cause us infections.

The only thing scientists had to do is isolate that antibiotic.

Some antibiotics that were developed from fungi: penicillin and cephalosporins.
5 0
3 years ago
Is There are no risks to genetic engineering
Free_Kalibri [48]
Jgigiyutuugmyiyitititigititititititiititoy
7 0
3 years ago
Hey please help ?????​
madreJ [45]

Answer: true.

Explanation:

3 0
3 years ago
PLEASE HELP MAJOR TIME CRUNCH
Roman55 [17]
Its A. archaea hope this helps
4 0
3 years ago
Read 2 more answers
Other questions:
  • In a plant, red flower color is incompletely dominant over yellow. What will the distribution of flowers in the F2 hybrids be if
    11·1 answer
  • In a scientific study, a conclusion can ...
    14·2 answers
  • 23.
    6·1 answer
  • Which of the following is directly related to deep-ocean currents?
    7·1 answer
  • when you rub your hand together,you produce a little heat.describe the flow of energy that causes the heat to be produced.use te
    11·1 answer
  • Glucose is an important biomolecule. Which of these statements is true regarding the movement of glucose into and out of cells?
    13·2 answers
  • Earth science sem 2
    12·1 answer
  • As a member of the Geology Rocks Club, you like to take a rock hammer and break open rocks. These rocks will break along their _
    12·2 answers
  • What is the branching network of filaments of a fungus called?
    14·1 answer
  • Describe 2 ways a red blood cell is adapted to carry oxygen in the human body
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!