You have learned about how to sample a population and estimate size from density. In this

At this boundary, crust is neither created nor destroyed.

salantis [7]

Transform boundary – this type of fault is found where two tectonic plates are moving alongside and parallel to each other mostly in opposite directions. This type of fault is also responsible for the rift valley and block mountains. No crust is destroyed nor new crust formed.

Convergent boundary – At this point, two tectonic plates are colliding because they are moving in opposite directions at each other. The pressure and stress of the collision force causes the plates to begin crumpling and folding at the boundary forming features such as fold mountains (an example is the Himalayas).

Convergent boundary – At this boundary , the denser of the two colliding tectonic plates (usually the oceanic plate) is subsided by the less dense one (usually the continental plate). The plate being subsided begins to melt as it does down into the mantle and becomes liquid rock. This magma rises through the fissures formed at the boundary and erupts into volcanic islands along the boundary.

4 0

3 years ago

When blood calcium levels drop, glands embedded in the posterior thyroid secrete ____________ hormone, which stimulates osteocla

oksian1 [2.3K]

When blood calcium levels drop, glands embedded in the posterior thyroid secrete parathyroid hormone, which stimulates osteoclastic activity. It is made up of parathyroid glands that lie behind the thyroid glands. The reason why it is important because it controls calcium level in the blood and within the bones. It controlled by the low calcium levels in the blood it restorative parathyroid secretion whereas the high calcium levels in the blood stop the release of parathyroid hormone.

5 0

4 years ago

If steel is more dense than lake water, why can a boat float?

Sindrei [870]

Answer:

the average density of the boat, including the steel and air, is less dense than 1.00 g/cm³. the average density of the boat, including the steel and air, is more dense than 1.00 g/cm³. lake water is more dense than pure water.

Explanation:

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8 0

3 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

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5 0

2 years ago

When are hypotheses supported in science

denis-greek [22]

Answer:

For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation. A scientific hypothesis is the initial building block in the scientific method

Explanation:

6 0

3 years ago