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
e-lub [12.9K]
3 years ago
9

Please can u help me .

Chemistry
2 answers:
Marysya12 [62]3 years ago
7 0

Answer:

4 is D 5 is A

Explanation:

sdas [7]3 years ago
4 0

QUESTIONS !

  • 1. Why might pesticides sprayed onto the fields reduce a bean crop?

A Pesticides damage plant leaves.

B Pesticides damage plant roots.

C Pesticides kill insects that feed on bean plants.

D Pesticides kill insects that pollinate bean plants.

  • 2. What may cause the rapid growth of plants in a lake?

A excess fertilizers

B excess herbicides

C low water pH

D low water temperature

ANSWER !

  • 1. (D) Pesticides kill insects that pollinate bean plants.
  • 2. (B) Excess Herbicides

EXPLANATION !

  • 1. When a field is sprayed with a pesticide, not all of the insects will die, and the ones that remain will produce offspring that will also be tolerant to the spray. This forces farmers to use more and different kinds of pesticides, so they can kill all of the insects that might destroy their crop.
  • 2. During periods of heavy rainfall, increased runoff brings more nutrients into a lake. These additional nutrients may be released from flooded soils or carried into the lake on silt or clay particles. Excess nutrients often boost plant growth, particularly algae or free-floating aquatic plants.                       <em>PLEASE MARK AS BRAINLIEST !!!!</em>
You might be interested in
What happens to a magnetic field if the current carrying wire A has three times as many loops but the same current as the curren
PilotLPTM [1.2K]
More the number of turns, more will be the magnetic field produced.

Hence wire A will have magnetic field greater than wire B.

Hope this helps!
5 0
3 years ago
Read 2 more answers
How do moss leaves and fish differ? How are they the same?
Lapatulllka [165]
Moss leaves and fish are different in that, the moss leave is a producer, that is, it produces its own food through photosynthesis while the fish is a consumer, it feeds on foods that are not produced by it.  
Both moss and fish are the same in the sense that both have cell as their basic unit of life, that is, they both possess cells.
4 0
3 years ago
I need help!!!!!!! please
lions [1.4K]

Answer:

A. bacteria

Explanation:

can i have brainlest?

8 0
3 years ago
What can we learn about past climate changes from ice cores?
Mice21 [21]
Fossil fuels about into Earth ice age time
6 0
3 years ago
For a reaction to be spontaneous under standard conditions at all temperatures, the signs of δh° and δs° must be __________ and
Shalnov [3]
For a reaction to be spontaneous under standard conditions at all temperatures, the signs of ΔH° and ΔS° must be negative and positive, respectively.
<span>Gibbs free energy (G) determines if reaction will proceed spontaneously, if </span>ΔG is negative, reaction is spontaneous.<span>
ΔG = ΔH - T·ΔS.
ΔG - changes in Gibbs free energy.
ΔH - changes in enthalpy.
ΔS - changes in entropy.
T is temperature in Kelvins.</span>

8 0
3 years ago
Other questions:
  • Dew forming on grass is an example of condensation true or fales and explain
    11·2 answers
  • A calorimeter contains 280.0g of water at 13.5C. When 0.250g of a substance with a molar mass of 510.0g/mol is dissolved, the te
    13·1 answer
  • What is the mass of the hydrogen atoms in 1 mole of water
    14·2 answers
  • State the aufbau principle.
    9·1 answer
  • How many sig figs are in 70030?
    9·1 answer
  • How manymoles of each ion are present in 175 mL of 0.147 M Fe2(SO4)3?
    10·1 answer
  • What are community level basic proffesion under health sector?​
    9·1 answer
  • Chemically combined substances, such as CO2, NH3, and H20 are called.....
    8·2 answers
  • According to the ,cell theory where do cells come from?
    6·1 answer
  • Does the mass of an object always equal the sum of its parts?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!