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
alina1380 [7]
3 years ago
11

Why is it sometimes difficult for ecologists to design controlled experiments?

Biology
1 answer:
GalinKa [24]3 years ago
6 0
It is difficult to control all variables except the one being tested. Hope this helps.
You might be interested in
The physical process that makes gene linkage incomplete is
andrew11 [14]

Answer:

Option E, Crossing Over

Explanation:

In the process of crossing over, a chromosome is replicated to produce two sister chromatids.  

Sister chromatids have genes that are divided and shared with the offspring in equal number. In this way genetic traits are exchanged and the offspring has a new set of genes.  

This process takes place at the prophase stage of cell division.  

Without crossing over, gene linkage is incomplete.

Hence , option E is correct

5 0
3 years ago
The image below shows people using sandbags as a means to contain a rapidly rising river. Which process of soil erosion is being
Brrunno [24]
<h2><u>Answer: </u></h2>

<u>Erosion:</u> is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.  A similar process, weathering, breaks down or dissolves rock, but does not involve movement.Erosion is the opposite of deposition, the geological process in which earthen materials are deposited, or built up, on a landform. Most erosion is performed by liquid water, wind, or ice .  Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment.

<u>Public domains:</u>VegetationThe simplest and most natural way toprevent erosion is through planting vegetation. Plants establish root systems, which stabilizes soiland prevents soil erosion. Geotextiles: Using geotextiles is an effective method because it also stabilizes soi .

<u> People placing sandbags along the shore of a river:</u>

The use of sandbags is a simple, but effective way to prevent or reduce floodwater damage. Properly filled and placed sandbags can act as a barrier to divert moving water around, instead of through, buildings. ... Tied sandbags are generally easier to handle and stockpile.

FloodSax Sandless Sandbags are reusable only in fresh water.FloodSaxreusable sandbags can be used a second or third time, depending on how clean the liquid it has absorbed. Click here to purchase FloodSax reusable sandless sandbags now.


3 0
4 years ago
Which is the only Kingdom in which all members have the property of motility?
Lena [83]

Answer:

I am sure it is <em><u>Eubacteria</u></em><u>.</u>

3 0
3 years ago
Which category of pollutants do fertilizers and pesticides come under?
zalisa [80]

Answer:

fertilizer and pesticides are agricultural pollutants

8 0
3 years ago
I need the answer to this
lions [1.4K]

Answer:

2 one

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Explain the relationship between water cycle, carbon cycle, and nitrogen cycle
    9·1 answer
  • What do animals breathe in that is released into the air during photosynthesis?
    12·2 answers
  • In an experiment to test the effect of exercise on the number of time a clothespin can be squeezed in 1 minute after resting or
    15·1 answer
  • Once a person has reached adulthood, oxygen dispersal into the bloodstream from the lungs drops about 4 percent _____.
    13·1 answer
  • Follow through is important in golf because it results in a greater _______.
    10·1 answer
  • NEED ANSWERS PLEASE FAST
    5·1 answer
  • In glacial erosion by abrasion, a glacier _____.
    6·2 answers
  • On Earth, water is found naturally in all of these states EXCEPT ____
    9·2 answers
  • Generally, human __________ come in 23 matching pairs Group of answer choices cells genotypes phenotypes chromosomes
    13·1 answer
  • The first of these to occur when a new volcanic island rises out to the sea is
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!