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alukav5142 [94]
4 years ago
8

Hypothesis: alfalfa plants grow best when given nitrogen-rich fertilizer. which statemend of purpose best defines the objective

of an experiment to test this hypothesis?
Biology
2 answers:
SIZIF [17.4K]4 years ago
3 0
To test the growth of alfalfa plants with and without nitrogen-rich fertilizer
sweet-ann [11.9K]4 years ago
3 0

Answer: To test the growth of alfalfa plants with and without nitrogen-rich fertilizer.

Explanation:

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What could be the effects of a population changing drastically over a short period of time?
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Answer: Causes of population decline

The size and demographics of the population change when:

fewer children are born;

families with children move to larger towns and cities;

young and better-educated people move to larger towns and cities.

Effects of population decline

When young people move to bigger towns and cities, the average age of the population in the place they leave behind automatically goes up. A community with a higher proportion of older inhabitants may be less attractive to businesses, which may additionally have difficulty finding suitable staff locally. Other effects of population decline include:

fewer schools, due to there being fewer children;

a drop in house prices because more homes are unoccupied;

fewer new homes being built;

less demand for rented accommodation;

fewer care facilities;

less turnover for shopkeepers and businesses;

fewer sports facilities;

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fewer people travelling by public transport, which thus costlier to run;

local residents have to travel further to reach the facilities they want.

Explanation:

7 0
3 years ago
Imagine a car as a model that represents the human body , with its parts performing various functions similar to human body syst
agasfer [191]
<span>The propositions are:
A. The gas in the car is the digestive system that provides the necessary energy.
B. The frame of the car is the digestive system that provides structure and support to the body.
C. The exhaust system of the car is the excretory system that removes waste. 
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E. The oil in the car is the excretory system that protects and coats the body.

The right answer is: C and D
*The exhaust system in the car removes waste from the engine like carbon dioxide, carbon monoxide, and several oxidated particles that are unuseful. The same thing for the excretory system in human, it excretes urea, creatinine, and urobillongen (all are wastes from a metabolism).
*The nutrient in the car are represented by the fuel, it is the component that gives energy to the wheels to roll.</span>
3 0
3 years ago
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This relationship between the tapeworm and the animal is an example of
Contact [7]

Answer:

Parasitism

Explanation:

The tapeworm benefits, while the animal gets hurt.

6 0
3 years ago
Easy 10 points , just match up the vocab.
saw5 [17]
<span>1. is exothermic
2. is current electricity
3. is static electricity
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5 0
4 years ago
what is the relationship between prokaryotic cells and eukaryotic cells that lead to the development of the eukaryotic cells we
Marta_Voda [28]

Answer:they both are not good

Explanation:

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3 years ago
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