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3 years ago

Pls state lamarck's theory

Biology

1 answer:

slega [8]3 years ago

6 0

Answer:

Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring

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Which phrase best describes the rock’s texture

iVinArrow [24]

Answer:

Is there an answer choice to choose from but if not a rocks texture includes.

Explanation:

Rocks are made of minerals. ... Sedimentary rocks sometimes are "gritty" or feel like sand. So students should being to feel rocks to get a sense of their texture. Metamorphic rocks tend to be "shiny" like a rock that has many rhinestones.

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3 years ago

What does blood take away from your cells

AURORKA [14]

Answer:

Carbon dioxide

Explanation:

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3 years ago

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The paranasal sinuses are lined with a membrane that creates mucus during allergies or the common cold. Presence of mucus and sw

storchak [24]

Answer:

The maxillary sinus, that is, the sinus located in the upper jaw, would be affected.

Explanation:

Sinusitis is a very traditional disease that is associated with headache, discomfort, and increased mucus making.

The causes can be viral or bacterial or even by some inhaled noxa, sinusitis of this type is bilateral, different from sinusitis of dental cause that are usually unilateral.

The paranasal sinuses are the sinuses that pneumatize the head, that is, they generate an internal air current in the bones to be able to heat and disinfect them from those noxas that are inhaled (that is why they are covered by a ciliated mucosa that drags the noxa to the outside and also its structure is pseostratified with mucous cells that secrete mucus enveloping the noxa).

Another function of the paranasal sinuses is to be able to alleviate the weight of the head, since the shell and the bones that remain in the head formation are very heavy, thus generating these cavities filled with air to alleviate the feeling of "heavy head" "When they become inflamed and filled with mucus, they are obliterated or with a reduced space, so the head feels heavier for some people.

The paranasal sinuses are the maxillary sinuses that are in the upper jaw, the sphenoid sinuses that are in the sphenoid, the ethmoid sinuses that are in the ethmoid and the frontal ones that are in the frontal bone that is vulgarly called as the forehead.

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3 years ago

How can the rate of a reaction be increased?

xz_007 [3.2K]

HI there!

This Answer Can Easily Be Found By Analyzing What Increases the reaction rate.Several factors can increase the rate of a chemical reaction. In general, anything that increases the number of collisions between particles will increase the reaction rate, and anything that decreases the number of collisions between particles will decrease the chemical reaction rate.

INCREASE THE CONCENTRATION OF THE REACTANTS

A higher concentration of reactants leads to more collisions per unit time and leads to an increasing reaction rate.

INCREASE THE PRESSURE OF GASEOUS REACTANTS

Changing the pressure of gaseous reactants is, in effect, changing their concentration. The increased number of collisions caused by a higher pressure generally increases the reaction rate.

DECREASE THE PARTICLE SIZE OF SOLID REACTANTS

Reaction depends on collisions. If a reactant is a solid, grinding it into smaller particles will increase the surface area. The more surface area on which collisions can occur, the faster the reaction.

INCREASE THE TEMPERATURE

Usually, an increase in temperature causes an increase in the reaction rate. A higher temperature means that the molecules have a higher average kinetic energy and more collisions per unit time. It also increases the number of collisions that have enough energy to cause a reaction to take place.

CHANGE THE SOLVENT

The rate of a chemical reaction depends on the medium in which the reaction occurs. The reaction may go faster in an aqueous solution than in an organic solvent or in a more polar solvent.

ADD A CATALYST

Catalysts lower the activation energy of a chemical reaction and increase the rate of a chemical reaction without being consumed in the process. They do this by an alternative mechanism that has a lower activation energy.

Analyzing the answers Given from A-C These answer have something to do with Decreasing. By decreasing The Temperature,Amount of reactants, And having less surface area will only Decrease our reaction rate.

Having this In mind, <u>Our Correct answer is D</u>

Hope this has Helped

-Adan

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4 years ago

Read 2 more answers

HELP ASAP I NEED HELP! I WILL GIEV BRAINLIEST CROWN<br><br> picture below

Paha777 [63]

Q4=D. Taxonomy
Q5=C. Dichotomous Key

Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world.

A dichotomous key is a tool created by scientists to help scientists and laypeople identify objects and organisms.

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3 years ago

Pls state lamarck's theory​

Pls state lamarck's theory