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Dmitry_Shevchenko [17]
2 years ago
12

What makes coral reefs vulnerable to environmental stress

Biology
2 answers:
Inessa [10]2 years ago
6 0
The sponge-like structure, as well as the high salt content of water and the <span>ease of contaminating water contribute to the environmental stress on a coral reef.

</span>
Klio2033 [76]2 years ago
5 0
The weak spongey texture
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One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this
Natali [406]

Answer:

C. Synthesis of organic molecules

Explanation:

According to chemical evolution theory, life originated from inorganic molecules by the mode of chemical evolution. In primitive conditions of earth, only inorganic molecules were present. These molecules reacted under lightning, UV radiation and other environmental conditions to give rise to complex organic molecules like amino acids, sugars, lipids etc. They formed the basis for proteins, RNA and other molecules which ultimately led to the formation of cellular structures.

5 0
2 years ago
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Some slime molds have some morphological similarities to fungi such as during times of stress they will develop into fruiting bo
gayaneshka [121]

Answer:

The correct answer will be option - D.

Explanation:

Slime moulds are the fungus-like protists which bear a structure called sporangium which produces spores.  The sporangium is produced in fungi as well due to which these protists are called fungus-like.  Although both produce sporangium but they are not closely related, rather they are distantly related organisms.

The appearance of a sporangium in both indicates that they had faced the same conditions due to which they both showed the same adaptation by producing the same structures performing the same function. In evolutionary terms, this is an example of convergent evolution.

Thus, option D is the correct answer.

5 0
3 years ago
Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction:
kondaur [170]

Answer:

4 Fe + 3 O₂ → 2 Fe₂O₃

Explanation:

Let's start with the oxygen.

Reactants - 2

Products - 3

What number do 2 and 3 have in common? 6.

Put a 3 in the reactants and a 2 in the products to balance the oxygen.

Fe + 3 O₂ → 2 Fe₂O₃

Now let's look at the iron.

Reactants - 1

Products - 4

Put a 4 in the reactants to balance the iron.

4 Fe + 3 O₂ → 2 Fe₂O₃

The equation is balanced. Hope that helps.

8 0
3 years ago
Evidence from the fossil record to support punctuated equilibrium would include
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The Punctuated Equilibrium theory proposes that a specie that appears in the fossil record will become stable. To support this theory, a fossil record serves as an evidence which includes transitional fossils. Transitional fossils refers to the remains of an organism that still exhibit traits to both the ancestral and descendant group.
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The primary function of DNA is to
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Is it not to store and transmit genetic info ?
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