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Tanya [424]
3 years ago
9

Define photosynthesis for 2 marks​

Biology
1 answer:
8_murik_8 [283]3 years ago
5 0

Answer:

Explanation:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

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Sharks and other predators do not normally eat plants however they do receive some energy from plants how is this possible
Leya [2.2K]
Animals get their energy by eating food.
Some animals eat plants. These are called herbivores.
They can also be known as primary consumers.
Carp is a herbivorous fish.


Nutrition – being able to get energy out of food ... Plants get their energy from the sun. ... Some animals eat both plants ... Predators. Predators eat other animals. Sharks eat fish so they are.

4 0
3 years ago
the increase to heart rate is a normal homeostatic response and allows for an adjustment of the body's set point during exercise
hodyreva [135]

Answer:

it increases oxygen levels and decrease carbon dioxide levels

3 0
3 years ago
Of the following choices, what is the approximate LD50 of the least toxic substance? 20 mg/kg, 70 mg/kg, or 130 mg/kg
pychu [463]

The approximate LD50 of the least toxic substance will be 130 mg/Kg.

  • The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug.
  • Commonly used as a broad indicator of a substance's acute toxicity are LD50 values.
  • Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity.
  • Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.
  • The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.
  • Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.

learn more about LD50 here: brainly.com/question/24845532

#SPJ1

8 0
1 year ago
Question 1 of 10
alex41 [277]

Answer:

Crust- ranged from 6km to70km thick .

mantle- convection here leads to earthquakes.

Core -has a liquid and soild layer

Moho barrier- separates the crust and mantle.

Explanation:

HOPE this helps

3 0
3 years ago
Plants play a crucial role in the carbon cycle because they ?​
8090 [49]
Photosynthesise. They take in carbon and use it to make glucose and oxygen.
5 0
3 years ago
Read 2 more answers
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