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
emmainna [20.7K]
2 years ago
7

Community ecologists study the factors that determine the abundance of different species. The Abundance of three algae species (

in mg/mL) is quantified in two different lakes before and after an unusually hot summer. The coordinates of these four samples inR3are (i) Lake A: (97,84,43)and (100,80,50) before and after summer, respectively, and (ii) Lake B: (23,59,22) and (20,63,15)before and after summer, respectively.(a) How does the magnitude of the change in algal community compare between the two lakes
Biology
1 answer:
Tema [17]2 years ago
7 0

Answer:

Explanation:

Given that:

The abundance of three algal species in Lake A is now represented by the vectors:

[97, 84, 43] and [100, 80, 50]

Now if we look at Lake A, the change occurring in the vector of algae species can be determined as:

a = [100 -97, 80 - 84. 50 - 43]

a = [3, -4, 7]

Thus, the magnitude of that change is:

|a| = \sqrt{(3)^2 +(-4)^2+(7)^2}

|a| = \sqrt{9+16+49}

|a| = \sqrt{74}

|a| =8.6 \ mg/mL

The abundance of three algal species in Lake B is now represented by the vectors:

[25, 59, 22] and [20, 63, 15]

At Lake B, the change occurring in the vector of algae species can be determined as:

b = [20 -23, 63 - 59. 15 - 22]

b = [-3, -4, -7]

Thus, the magnitude of that change is:

|b| = \sqrt{(-3)^2 +(4)^2+(-7)^2}

|b| = \sqrt{9+16+49}

|b| = \sqrt{74}

|b| =8.6 \ mg/mL

Hence, for both Lake A and B, the magnitude of change is the same.

You might be interested in
O points
Anuta_ua [19.1K]

Answer:

.40+900=900.40+300=1200.40

Explanation:

please mark brainliest

4 0
3 years ago
A mutation in the code for a trait may not always change the expression of that trait. What advantage does this provide cells?
Vedmedyk [2.9K]

Answer:

, donner un exemple de deux plaques divergentes ,et de  deux plaques convergentes

??

Explanation:

tprenna

7 0
2 years ago
A human cell is shown in the diagram.
jolli1 [7]

Answer:

Organelle 1

Explanation:

Organelle 1 is the nucleus which stores genetic material such as the xx or xy chromosomes which contain the information for what gender a person is.

3 0
3 years ago
Read 2 more answers
Which of the following is characteristic of prokaryotic genomes but NOT eukaryotic genomes? 1. histones
AnnZ [28]

Answer:

4. Circular Chromosomes

Explanation:

We know that eukaryotic chromosomes consist of double-stranded DNA.

But prokaryotic chromosomes are actually circular, which is very different from eukaryotic.

5 0
3 years ago
Ike is conducting a scientific experiment involving clear adhesive tape.
Nezavi [6.7K]

Answer:

see if the strips repel each other when brought close together

Explanation:

Electric fields can exert forces on objects, even if the objects involved are not touching. One way to demonstrate that electric fields exist around charged objects is to observe the effects of their forces at a distance.

Since Ike knows that each strip of tape carries a negative charge, he could see if the strips repel each other when brought close together.

8 0
3 years ago
Other questions:
  • BEST ANSWER GETS BRAINLIEST Mandy made the following table describing the conditions required to form sleet and snow, but left s
    7·1 answer
  • The path of a meteor passing Earth is affected by its gravitational force and falls to Earth's surface. Another meteor of the sa
    10·2 answers
  • Witch characteristics are always present in all living things
    13·2 answers
  • In Mendel's work with peas, an F1 hybrid (smooth yellow) was crossed to the recessive (wrinkled green) parent type. In terms of
    11·1 answer
  • About 45 to 60 minutes after LTP, all of the following occur among dendritic spines EXCEPT ______.
    8·1 answer
  • Describe what is happening in each of the phases of cellular division with what you observe from the photomicrographs in the lab
    12·1 answer
  • As a plant cell what extra layer must be formed in the onion to separate the daughter cells?​
    9·1 answer
  • Help me please thanks
    10·1 answer
  • When Clara's doctor taps her knee with the rubber hammer, her knee ______. Which portion of the spinal cord is responsible for t
    12·1 answer
  • 3. What happens as a population approaches carrying capacity?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!