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Vitek1552 [10]
3 years ago
11

The fossil record provides evidence that primitive humans were alive on earth at the same time as the

Biology
1 answer:
Kitty [74]3 years ago
5 0
Dinosaurs that were on earth
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Please tell me how does water flow through sponges in order​
polet [3.4K]

Answer:

Small and tube shaped, water enters the sponge through dermal pores and flows into the atrium. Choanocyte flagella create the current to expel it through a single osculum. Note that water enters the sponge through a modified cell known as a porocyte.

Explanation:

Hope this helped, Have a Wonderful Day!!

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3 years ago
If you stir salt into boiling water, you produce a
jeka57 [31]
The choices can be found elsewhere and as follows:

<span>a) mixture called a suspension
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I believe the answer is option B. If you stir salt into boiling water, you produce a mixture called a solution. Hope this answers the question. Have a nice day.
6 0
3 years ago
List two reasons that enzymes are needed... why don't active<br> sitesexist on their own?
Yakvenalex [24]

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Enzymes are proteins in composition which are a very essential component of the metabolic reactions in the living organisms.

The properties of enzymes allow the enzymes to be used as a reaction catalyst which increases the speed of the reaction.

The enzymes lower the threshold energy of the chemical reaction and thus increases the rate of reaction.

The enzyme catalyses very complex reactions like a breakdown of complex biomolecules as well as the formation of complex biomolecules.

The active sites are present on the enzymes which bind the substrate molecule and increases the pace of reaction.

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3 years ago
How many individuals in the F1 generation do not have the widow's peak<br> trait? <br> and why ?
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I can’t read it i need my glasses but i lost them do you know where they are?
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2 years ago
The visible characteristics of an organism, such as hair color, describes the _______ of that organism.
olga2289 [7]

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phenotype

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