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Agata [3.3K]
3 years ago
11

What is the main fuel of a main sequence Star

Biology
1 answer:
NikAS [45]3 years ago
8 0
If we're asking for elements, it's helium and hydrogen.
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When members of a community work to preserve their unique cultural traits, they are trying to protect their __________.
almond37 [142]

Answer:

Explanation:

Local culture option D is the correct answer

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3 years ago
Choose the CORRECT statement about enzymes below.
Papessa [141]

Answer:

Enzymes function best at specific pH and temperatures.

Explanation:

An enzyme can be defined as a biological catalyst that typically lowers the activation energy of a biological reaction. When the activation energy of a reaction is low, the rate of the reaction would be faster. Therefore, an enzyme speeds or catalyzes the rate of a reaction by lowering its activation energy.

Also, if the conditions are not optimal for an enzyme, it limits the ability of an enzyme to bind or be joined with its substrates.

Hence, the correct statement about enzymes is that enzymes function best at specific pH and temperatures. An increase in temperature increases or speeds up the rate of a reaction while low temperature limits or reduces the rate of a reaction. The optimal temperature for enzymes in the human body is around 37 degrees celsius.

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3 years ago
Which of the following have been linked to the dramatic global decline of amphibian populations? Select one: a. drainage of wetl
charle [14.2K]
<h2>The correct answer is: e.</h2>

Explanation:

  • Decline in the global population of amphibians is due to multiple reasons which include:
  1. A moist ecosystem is necessary for amphibians especially for the purpose of their reproduction. The drainage of the wetlands deprives them of their habitat.
  2. Pollutants adversely affects the survival of the gametes, tadpoles or the adult amphibians by acting as toxic agents and inhibiting their normal metabolic function.
  3. Infectious diseases often cause their death resulting their population to decline.
  4. Global climate warming affects their normal metabolic growth and development and hence causes their population to decline.

7 0
3 years ago
A marine biologist has dredged up an unknown animal from the seafloor. Describe some of the characteristics that could be used t
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Answer:

The first thing to look at would be type of symmetry the organism exhibits. If it is asymmetrical then it would be a sponge and the discovery could stop right there. If not, other characteristics need to be investigated.

Knowing the type of body cavity this organism has would be helpful.

It would also be beneficial to know what type of skeleton (endo or exo) this organism has and what its appendages look like.

Finally, the type of digestive tract and the presence or absence of a head would help to determine what this creature is.

4 0
3 years ago
Suppose a person developed a mutation in a somatic cell which diminishes the performance of the body’s natural cell cycle contro
LenaWriter [7]

Answer:

awdawd

Explanation:

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3 years ago
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