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3 years ago

If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that

1 answer:

8 0

If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that seems to come from behind the surface (B). In theory, the sound waves hit the smooth surface and bounce off the surface. The sound also repeats itself. This is known as an echo. There needs to be a time gap between the sound and the echo otherwise the listener will not hear the echo. It will still be present but form part of the original sound.

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Help pls what’s the answer?

Eddi Din [679]

Wala jwk lang hahahahaha

4 0

3 years ago

Read 2 more answers

Sweet yellow tomatoes with a pear shape bring a high price per basket to growers. Pear shape, yellow color, and terminal flower

Vitek1552 [10]

Answer and Explanation: The farmer has a pure-breeding line of tomato means the farmer has a tomato with genotype FFrrtt while the other line of tomato has genotype ffRRTT.

The cross between these lines gives a F1 generation of heterozygous full, red and axial or FfRrTt.

With an individual of F1 crosses with another individual of F1, the Punnet Square will be:

FfRrTt x FfRrTt

1) Dividing each characteristics, for simplicity:

F f

F FF Ff

f Ff ff

R r

R RR Rr

r Rr rr

T t

T TT Tt

t Tt tt

Analysing Punnett squares, we notice the line wanted (ffrrTT) will be produced, when an individual of F1 generation cross with another individual with the same generation.

4 0

4 years ago

Which specific process in the light dependent reactions produce oxygen and hydrogen ions? A- The formation of NADPH

garri49 [273]

Light-dependent reactions involve a series of events that involve electrons moving along the transporter chain. Water provides the electrons, releasing oxygen and hydrogen ions. C) The splitting of water

<h3>What are the light-dependent reactions?</h3>

Photosynthesis involves two stages: light-dependent and light-independent reactions.

Light-dependent reactions occur in the thylakoids of chloroplasts. They Involve the noncyclic pathway which is a flow of electrons along a chain located in the thylakoid membrane.

Photosynthetic pigments are in charge of light absorption. When sunlight reaches the pigments, electrons provided by water get excited and move along the electron transport chain.

During these reactions, oxygen is released, while ATP and NADPH are produced. Both of them are used during light-independent reactions.

The steps of light-dependent reactions are the followings,

1) Luminous energy is trapped by chlorophyll in Photosystem II.

2) When the pigment molecules absorb light, electrons provided by water molecules get to a higher energy level.

3) The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.

4) When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules.

5) The absorbed luminous energy moves the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.

6) When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II.

7) When the water molecule breaks down, it releases oxygen and hydrogen ions, which remain in the thylakoid lumen. From there hydrogen ions are pumped to the stroma by the ATP synthase.

8) The released energy is used to produce ATP molecules.

9) Hydrogen ions go back from the stroma to the thylakoid compartment.

According to this information, the correct option is C- The splitting of water.

Water breaks down and releases oxygen, hydrogen ions, and provide electrons to the chain.

You can learn more about light-dependent reactions at

brainly.com/question/13349357

brainly.com/question/17161133

#SPJ1

5 0

2 years ago

Which part of the heart has the thickest walls?

devlian [24]