1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ipn [44]
3 years ago
5

Which of these human activities is a serious threat to marine ecosystems? A) Fishing in estuaries. B) Dumping wastes in landfill

s. C) Sinking chemical wastes in the ocean. D) Burning wastes rather than dumping them in landfills.
Chemistry
2 answers:
garik1379 [7]3 years ago
7 0
Sinking chemical wastes in the ocean is a serious threat, because the chemicals will poison all the living things around it. so the correct answer is C.
     Hope this helps !
dolphi86 [110]3 years ago
3 0
C because burning waste does not affect the marine <span>ecosystems</span>
You might be interested in
What are the atoms of Fe(SCN)3
Igoryamba

Answer:

55.845

Explanation:

yep

5 0
2 years ago
Sodium nitrate is used in fertilizers, explosives, and glass manufacturing. Give the formula for this compound
krek1111 [17]

Explanation:

The molecular formula for Sodium Nitrate is NaNO3. The SI base unit for amount of substance is the mole. 1 grams Sodium Nitrate is equal to 0.011765443644878 mole.

7 0
2 years ago
Consider this reaction 2Mg(s)+O2(g) ———&gt; 2MgO(s) What volume (in milliners) of gas is required to react with 4.03 g Mg at STP
nydimaria [60]

The volume of a gas that is required  yo react with 4.03 g mg  at STP  is 1856 ml



calculation/

  • calculate the moles of Mg used

     moles=mass/molar mass

moles of Mg is therefore=4.03 g/  24.3 g/mol=0.1658  moles

  • by use of mole ratio of Mg:O2  from  the equation  which is 2:1

  the moles 02=0.1679 x1/20.0829 moles

  • at STP  1 mole of a gas= 22.4  l

                            0.0895 moles=? L

  • by cross multiplication
  • =0.0895 moles  x22.4 l/  1 mole=1.8570 L

into Ml = 1.8570 x1000=1856  ml  approximately to 1860

6 0
3 years ago
What is the first step of a ladybug during the growth and development process​
Sunny_sXe [5.5K]

Answer:

Damian here! (ノ◕ヮ◕)ノ*:・゚✧

The newly hatched larva is in its first instar, a developmental stage that occurs between molts. It feeds until it grows too big for its cuticle, or soft shell, and then it molts. After molting, the larva is in the second instar. Ladybug larvae usually molt through four instars, or larval stages, before preparing to pupate.

Explanation:

hope this helps? :))

7 0
3 years ago
When heat is supplied to a solid, the molecules vibrate but do not leave their positions. Why is this behavior observed?
My name is Ann [436]

Molecules do not have enough kinetic energy to overcome the intermolecular bonds.


7 0
3 years ago
Other questions:
  • Aces true or false, negatively charged particles in an atom are called electrons?
    7·1 answer
  • When zinc reacts with sulfuric acid, as shown here, what mass of hydrogen is produced from 31.8 g of zinc?
    6·1 answer
  • The process of isotopes breaking down and emitting particles, such as alpha or beta, to form a new substance.
    14·2 answers
  • 2. Among the complexes K4[Cr(CN)6] (A),K4[Fe(CN)6] (B) , K3[Co(CN)6] (C) , K4[Mn(CN)6] (D), Jahn-Teller distortion is shown by *
    6·1 answer
  • How many atoms are in each of the following
    15·2 answers
  • Gsfdfsveg dgdtdgrgsjrjrjrhrhrjeurjruehrururhrhrhhrhdj okay so I googled this and got nothing ugh help meh
    11·1 answer
  • Place these hydrocarbons in order of decreasing boiling point. Compound Structure butane CH3CH2CH2CH3 pentane CH3CH2CH2CH2CH3 2,
    10·1 answer
  • What is the energy of an electron in a Li+ ion when an electron moves from n = 2 to n =3?
    15·1 answer
  • 21.041gMg - 21.00gMg/ 24.31 (gmg/ mol Mg)
    12·1 answer
  • If the atoms that share electrons have an unequal attraction for the electrons, the bond is called
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!