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MaRussiya [10]
3 years ago
8

The illustration shows an ocean food chain and the concentrations of the toxin DDT at each trophic level. What conclusions can b

e made as to how DDT impacts this food chain? Include where the concentration of DDT is likely to be lowest, and where it is likely to be highest.

Biology
1 answer:
White raven [17]3 years ago
4 0

Answer:

Lowest concentration: small fishes

highest concentration: Osprey

Process: Biomagnification

Explanation:

With respect to given food chain, DDT concentration will be lowest in the primary consumers, that is, in small fishes. The top consumers, that is, osprey would exhibit highest DDT concentration. The image shows biomaginification of slow metabolizing DDT and its accumulation in the tissues of the living beings. Since biomagnification leads to maximum accumulation of chemical in the tissues of top consumers, osprey bird would be most severely affected.

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Which option identifies one section of the ocean floor?
brilliants [131]

Answer:

Transition zone

Explanation:

8 0
3 years ago
Read 2 more answers
3. a) What components of DNA are of particular use in gel electrophoresis, and why? (2 points)
Yuri [45]

Answer:

DNA molecular weight standard controls, also known as DNA ladders

Explanation:

A DNA ladder is a molecular-weight size marker used to identify the size of the PCR products in a gel electrophoresis. The DNA ladder consists of a solution containing double-stranded DNA fragments with different molecular weights including, among others, 50 base pairs (bp), 100 bp, 1000 bp and 3000 bp DNA fragments. The concentration of each DNA fragment in the DNA ladder must be sufficiently high to be visualized on the electrophoresis gel.

4 0
2 years ago
hey help if you know this please, it doesn't have lines indicating to where so I'm confused, also need help with number 7 please
Olegator [25]

Answer:

6.

The attached image contains the correct labels.

7.

a. 1

b. 6

c. 3

d. 10

e. 8

f. 4

g. 2

h. 7

i. 9

j. 5

Explanation:

7.

The entire cardiac cycle is as follows:

  1. Deoxygenated blood enters the right ventricle from the superior and inferior vena cava.
  2. The right atrium pumps the deoxygenated blood to the right ventricle.
  3. From the right ventricle, the deoxygenated blood moves to the lungs via the pulmonary artery.
  4. After gaseous exchange, the oxygenated blood returns to the heart into the left atrium via the pulmonary vein.
  5. From the left atrium, blood moves to the left ventricle.
  6. Oxygenated blood is pumped by the left ventricle into the aorta which supplies blood to all parts of the body.
  7. Deoxygenated blood, collected from the body again enters into the right atrium via the vana cava.

5 0
3 years ago
HELP PLEASE ILL GIVE BRAINLIEST
My name is Ann [436]

Answer:

external

Explanation:

<em>Through the process of photosynthesis, plants use the sun's energy to make sugars to function. External means from an outside force, while internal means from within. Since the sun isn't inside a plant, they gather it from outside, thus it's external.</em>

8 0
2 years ago
List two species that may be threatened by the construction of a solar power tower
DENIUS [597]

Answer: the question is incomplete,below is the complete question.

List two species that may be threatened by the construction of a solar power tower in the California Desert

The answers are, Desert torties, mountain yellow legged frog and Joshua tree.

Construction of a solar power tower in the California Desert will threaten the existence of Desert torties, mountain yellow legged frog and and Joshua tree.

Explanation: The construction of solar power towers in Mojave desert in California poses a threat to the existence of quite a number of plants.The Mojave desert houses the largest solar power plant in the world,creating the solar power tower will create job opportunities for people but at the same time endangering the existence of about 12 rare plants that are found in the region of which Desert torties, mountain yellow legged frog and Joshua tree are greatly included,these plants cannot co-exist with solar thermal mirror arrays,this brings a controversy between energy/electricity generation and wildlife/ecosystem conservation.

3 0
3 years ago
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