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Dmitry [639]
4 years ago
12

Cathy conducts a scientific investigation. How can she make sure her results are valid?

Biology
2 answers:
swat324 years ago
7 0
To keep cheking and redoing the investigation taking her notes and making them more valid
Ksivusya [100]4 years ago
3 0
She compares the data with other outcomes of the same experiment and conducts the experiment more than one time without changing anything

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Hydroelectric dams are often used to generate
inysia [295]

Answer:

Potential & Kinetic energy.

Explanation:

The water used gains potential energy overtime before it is converted to mechanical (or kinetic energy). This can be explained by the water having increased potential energy as it flows at an equal altitude, but converting to kinetic energy as it flows downhill, or over the dam.

This kinetic (or mechanical) energy is then converted to traditional electricity. This process is also an example of a renewable resource being utilized for everyday things (such as powering cars, homes. or charging batteries).

7 0
3 years ago
The foxglove plant, seen in the illustration, produces very toxic chemicals that can cause serious illness and death in any orga
s2008m [1.1K]

There is no answer ,you wrote the answers with the question

4 0
3 years ago
Read 2 more answers
Which environmental factor could lead to a decrease in genetic variation in a population of tuna?
Svetradugi [14.3K]
Hello,

An increase in pollution [could] lead to a decrease in <span>genetic variation in a population of tuna.

Faith xoxo</span>
6 0
3 years ago
In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the sy
Norma-Jean [14]

Answer:

Up-regulation.

Explanation:

Hormones may be defined as the chemical messengers of the body that can transmit information and maintains homeostasis. The hormones can directly go into the bloodstream and may release through the special ducts.

The receptors of the hormone is required for the binding of the receptors. To maintain the normal homeostasis of the body, the body shows the up regulation and down regulation. In up regulation the hormone levels increases in the body by increasing the receptor on the specific target organ.

Thus, the correct answer is up regulation.

7 0
4 years ago
Provide explanations of genotypes and phenotypes.
Korvikt [17]
The phenotype is the physical appearance of an organism, while the Genotype is the genetic composition of an organism. Phenotype is observable and are the expression of the genes of an individual. So even the organism with the same species may differ, with a minute difference in their genotype. This is the main difference between the two.

We can notice one’s hair colour, eye colour, height, weight, skin colour, etc. but cannot look at genes responsible for these characters, so the observable physical look is the phenotype while the unnoticed genes responsible for such characters present in the DNA of cell of the individual is genotype.

To explain the above lines, here is the simple example of a pure red colour flowering plant (RR) is crossed with the white colour flowering plant (rr). The result of the Genotype of the F1 generation will be – Rr (Hybrid red colour), and the Phenotype of the F1 generation will be the – Red colour flowering plant.

Genotype and phenotype are the two very closely related and similar-sounding words, but their meaning is different. Our earth has a dynamic variety of organisms, present in soil, water and on land. But as the genome of each organism is different, and so there phenotypes also whether it’s their colour, height, weight or other morphological features.
4 0
3 years ago
Read 2 more answers
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