Answer:
High amounts of fluoride
Explanation:
Teeth cleaning agents can contaminate one's blood with fluoride, something that it is only healthy to accumulate a small amount of.
Answer:
<h2>Chalamydomonas.</h2>
Explanation:
Protists are those organisms that are unicellular and eukaryotic in nature. They are present in diverse forms and structures and show different types of characteristics/. There are many protists that are harmful to human beings and some other organism that causes certain diseases called parasitic protists such as protozoans, trichomonas and some other. There are some protists that are not parasitic in nature such as Chlamydomonas and some other. Protists have different types of the mode of nutrition that may be autotrophic, saprophytic and parasitic and some other.
Answer:
option(B)
Explanation:
Absorbing nutrients into the blood stream from the food that was eaten is called absorption.
Answer:
Channel protein.
Explanation:
Channel protein have gate that opens and close which allow the passage of polar substance or ions to move to permeable membrane of the cell by diffusion. They are water filled and allow the movementof charged molecules inside and outside the cell membrane i.e polar molecules move through non polar bilayer of the cell membrane.
Answer:
Scientists can study tree rings in ice to learn more about past climates.
Explanation:
i think this is right one.
