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Veronika [31]
3 years ago
13

A student performed a lab investigation to determine the effect of temperature on the heart rate of a water flea. What is the in

dependent variable in the investigation? * o specie of flea O temperature O heart rate N O size of flea answer​
Biology
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

B. Temperature

Explanation:

The heart rate depends on the temperature so the heart rate is dependant and the one that changes is independant

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Define autotrophs, heterotrophs, producers, and photoautotrophs.
sergey [27]
Producers: living things that make their own food through a process called photosynthesis

Autotrophs: an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

Heterotrophs: an organism deriving its nutritional requirements from complex organic substances.

Photo autotrophs: organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration.
3 0
3 years ago
What is the main function of a selectively permeable cell membrane?
BabaBlast [244]
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5 0
3 years ago
In thinking about the asexually reproducing creatures in this simulation, what advantages did their reproduction style have in e
Maurinko [17]

Answer:

the population can increase rapidly when the conditions are favourable

only one parent is needed

it is more time and energy efficient as you don't need a mate

it is faster than sexual reproduction

6 0
3 years ago
What are the five parts of skill related fitness. Please select all 5 below. Question 1 options: Speed Muscular Strength Coordin
Goryan [66]

Answer:

There are only four parts of skill related fitness in the options; they are:

Speed

Agility

Balance

Coordination

Explanation:

Physical fitness refers to the ability to perform physical activities well without fatigue. In other words, being physically fit refers to a state of general wellbeing. Physical fitness can either be health-related or skill-related. The skill-related components are six in number viz: agility, power, balance, coordination, speed and reaction time.

However, only four of these skill-related parts of physical fitness are mentioned in the options of this question. They are:

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- Agility: This is the ability to move easily and quickly in different directions

- Balance: The ability to maintain an upright body position during training or physical activity

- Coordination: The ability to make physical senses of one's body (eye) cooperate with the limbs (hands and feets) during a physical activity.

Note that, Aerobic Endurance and Muscular strength are health-related components of fitness

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3 years ago
Can evolution by natural selection be witnessed and quantified?
madreJ [45]
Yes it can be quantified
7 0
3 years ago
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