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timama [110]
3 years ago
15

what can cause a gap in the rock record a) Lack of rock deposition. b) erosion. c) neither erosion nor lack of deposition. d) Bo

th erosion and lack of rock deposition
Biology
2 answers:
frosja888 [35]3 years ago
3 0
Both erosion and lack of rock deposition
frez [133]3 years ago
3 0

Answer:

The answer is

D)Both erosion and lack of rock deposition

Explanation:

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How is enthalpy used to predict whether a reaction is endothermic or exothermic?
Radda [10]

<u>Answer:</u>

<em>329.48 KJ/mol heat is released by the combustion of 2 molof methane</em>

<u>Explanation:</u>

The value of enthalpy determines whether the reaction is exothermic or endothermic. If the enthalpy change is positive, then the reaction is endothermic (heat or energy released) and if the enthalpy change is negative then the reaction is exothermic (heat or energy absorbed).

2CH_4(g)+4O_2(g) => 2CO_2(g)+4H_2O(g)

\Delta H \ reaction=[ 2(\Delta HfCO_2)+ 4(\Delta HfH_2O)]-[2(\Delta HfCH_4)+4(\Delta HfO_2)]

                            =2 ( -(393.5 KJ)/mol)-[2( -74.6 KJ/mol)+4(-241.82 KJ/mol)]

                            = -787 KJ/mol-[ -149.2 KJ/mol-967.28 KJ/mol]

                           = -787 KJ/mol+1116.48 KJ/mol

                                          =329.48 KJ/mol

<em>In this question, </em><em>the enthalpy of formation</em><em> has positive value and hence the </em><em>reaction is endothermic</em><em> in which the heat is released. </em>

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3 years ago
Jellyfish don't have a true hydroskeleton, but they do use water for support and to help them move.
Gre4nikov [31]
This statement is true
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MatroZZZ [7]

Answer:  the answer is c

Explanation:

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The dental formula for both Old World and New World monkeys is the same as the dental pattern for tarsiers.
Snezhnost [94]

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b. false

Explanation:

Old world monkey and new world monkey do not have same dental formula . Dental formula is different for old world monkey as compare to new world monkey.

Old world monkey have 2.1.2.3 dental formula but on the other hand new world monkey have 2.1.3.3 dental formula .

Old world monkey have narrow nose but new world money have wide nose.Generally old world monkey are found in Asia and Africa that is why they called old world monkey.

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aniked [119]
Easy your answer is cumulus
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3 years ago
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