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VMariaS [17]
3 years ago
5

The main target when controlling the acidity of soils is ______. a. neutralizing the pH b. adding base c. replacing lost cation

nutrients d. eliminating humic acids
Biology
2 answers:
natima [27]3 years ago
6 0
<h3>Answer: C. replacing lost cation nutrients </h3>

malfutka [58]3 years ago
3 0

Answer:

C

Explanation:

Acidic soils mean they have more of Al3+ and H+ ions which are acid forming cations. These cations make alkaline forming ions unavailable to plants as nutrients. When the pH of the soil is raised, the Al3+, Fe3+, and H+ are neutralized. The ions bind with –OH ions hence releasing the ions in the negatively-charged sites on the hummus to play a role in the nutrient exchange.

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What is the correct order of events in the sliding filament theory of muscle contraction? 1. Myosin head binds to actin 2. Calci
valkas [14]

Answer:

The correct order is: 6) Sarcoplasmic reticulum releases calcium ions, 2) Calcium ions bind to troponin, 5) Tropomyosin moves to expose active sites of actin, 4) ATP is split into ADP and P, 1) Myosin head binds to actin, 7) ADP and P released from myosin, 3) Myosin cross-bridges bend, pulling actin toward center of sarcomere.

Explanation:

The ability to contract is an important property of the muscle cells and is fundamental to animals because muscles not only make locomotion possible but are also responsible for the correct functioning of organs (including the heart).

The mechanism behind muscle contraction is the sliding of filaments in a structure called sarcomere, which mostly involves the presence of actin and myosin filaments.

For muscle contraction to happen, there needs to be a <u>stimulus coming from the nerve that innervates said muscle</u>. This stimulus generates the release of <u>calcium ions</u> that will bind to a protein called troponin and will lead to the exposure of the active site of actin so it can bind to the myosin head. <u>This process requires ATP</u>.

7 0
2 years ago
Why are septic tanks and oxidation ponds not feasible for large municipalities?
Tju [1.3M]

Answer:

Septic tanks and oxidation ponds

Explanation:

These system of wastewater treatment and disposal are not too feasible in large municipalities because of the presence of sewer system that has been made available by government, in order to mitigate the possibilities of transmitting enteric diseases that are very harmful to human health.

5 0
3 years ago
What species are humans furthest related to
denis23 [38]

Answer:

the comb jellyfish

hope it helps!

4 0
2 years ago
What does a scientist observe in a chemical's reaction rate? the speed at which the reactants change to products over a given ti
kvasek [131]

Answer:

The speed at which the reactants change to products over a given time.

Explanation:

A chemical's <u>reaction rate</u><u> is the change in the concentration of a reactant or a product with time (in moles per second)</u>.

Remember that during a chemical reaction, reactants are converted to products. Or what is the same, products are formed at the expense of reactants. This can be represented:

reactants → products

Therefore,<u> the progress of a reaction can be followed measuring the decrease in concentration of the reactants or the increase in concentration of the products.</u>

According to the temperature and other parameters, the reaction rate can increase or decrease.

8 0
2 years ago
Explain the relationship between crossing over and genetic variation
diamong [38]

Answer:

Crossing over is termed as a process by which genetic materials are exchanged by non-sister chromatids during meiosis. Crossing over results in the new combination of information in genetic for, the cell for a specific trait. It ensures that organisms are identical from one generation to another.

Explanation:

9 0
3 years ago
Read 2 more answers
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