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3 years ago

How are weeds alike and different than plants/flowers?

1 answer:

6 0

Flowers and weeds are in common in many ways such as they grow from the ground. Also they similar to garden plants, weeds can produce colorful flowers and attract beneficial insects, like bees and butterflies, to the yard. ... A field of blooming wild spring flowers and weeds.Weeds and flowers both grow in the soil and require water, sunlight, and proper nutrients in order to survive.

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Different plant species require different amounts of direct sunlight in order to flower. A student designed an experiment to det

Gnoma [55]

Answer:

Independent variable: LENGTH OF EXPOSURE TO DIRECT SUNLIGHT

Dependent variable: PRODUCTION OF FLOWERS

Control group: THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours

Experimental group: THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT

Constant: THE SAME PLANT SPECIES

Explanation:

Independent variable is the variable that the experimenter changes or manipulates in an experiment. In this experiment, the experimenter exposes the specific plant species to sunlight at different length of time, hence, the LENGTH OF EXPOSURE TO DIRECT SUNLIGHT is the independent variable.

Dependent variable is the variable which is measured in an experiment. In this experiment, the measured/dependent variable is the PRODUCTION RATE OF FLOWERS by the plant species.

Control group is the group in an experiment that does not receive the variable being tested. In this experience, the control group is THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours

Experimental group is the group of am experiment that is exposed to the experimental treatment (sunlight). In this case, the experimental group is THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT.

Constants are variables of an experiment that must be kept unchanged for all groups throughout the experiment in order not to affect the experiment's outcome. In this experiment, the constant is THE SAME PLANT SPECIES used,

3 0

3 years ago

Please help. only answer if u know please. i will love u forever

Kazeer [188]

First question: When the population of lynx increases, the population of hares will decrease due to being over-hunted by more predators than usual. The hare is a source of food to the lynx, so with more lynx's...less hares... and less hares means either less food for the lynx and their population starts to die off...OR... The lynx adapt and start hunting new animals which could cause a massive disruption in the food chain.

Second question: When the number of hares increase in the environment it would mean more food for the lynx and other predatory animals. But with more food, comes more overpopulation. with plenty to eat the lynx population increases and that could cause problems for the environment, and other creatures.

4 0

3 years ago

1. Explain Why do South<br> America and Africa seem to<br> fit together?

Lina20 [59]

Answer:

pangaea the thought that all of the worlds countries were together as a giant puzzle

4 0

3 years ago

Place the Polymerase Chain Reaction events listed below in the order in which they occur. - Double-stranded DNA is produced - DN

Contact [7]

Answer:

1- Test tube with DNA sample is placed in machine

2- DNA sample is heated

3- DNA denatures

4- Taq polymerase initiates DNA synthesis

5- Double-stranded DNA is produced

Explanation:

The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories in order to produce many copies of a specific DNA sample. Thermocyclers are machines designed for a cyclic temperature change of the PCR. First, an initial denaturation step where DNA sample is heated to separate the double-stranded DNA into two single strands. Subsequently, 20-40 PCR cycles are repeated to produce millions of copies of a specific DNA sequence. There are three steps in each PCR cycle: 1-Denaturation to 94–98 °C (DNA strands are separated), 2-Annealing to 50–67 °C (primers bind to each DNA strand on the opposite ends of the DNA strands to be copied) and 3-Extension to 75–80 °C (Taq polymerase initiates the synthesis of complementary DNA strands).

5 0

3 years ago

What is the difference between the mosses and ferns gametophyte stages

Ivan

The difference is that Moses is a human but had a great connection with god and fern was a god. Hop this helps:-))

5 0

4 years ago