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andre [41]
3 years ago
10

What is the best topic to choose for a science fair project

Biology
1 answer:
saveliy_v [14]3 years ago
7 0
This isn't a topic. But a good tip is to choose something you find interest in. This way you can present your project in a good, happy manor and actually enjoy doing the project.
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The arrows in a food chain point from the organism ____________ the energy to the organism ___________ the energy
melamori03 [73]

Answer:

1. Supplying

2. Taking

Explanation:

Food chain is a linear relationship between organisms that depicts the flow of energy from one organism to another. In a food chain, organisms are arranged in trophic levels where arrows pointing to the right direction (➡) are used to show that the organim the arrow is pointing to eats the organism behind it.

Hence, according to this question, arrows in a food chain point from the organism SUPPLYING the energy to the organism TAKING the energy.

6 0
3 years ago
Why is it important to know the PMI in forensics
tia_tia [17]
PMI is very important in forensics because having a time of death can help with the identification of human remains and can support or deny the stated actions of suspects in the crime.
3 0
3 years ago
If a solution has a perfectly neutral pH, what is the concentration of hydronium ions in the solution? A) 7 M B) 10-7 M C) 107 M
e-lub [12.9K]
10-7Mis your answer .-.
5 0
3 years ago
In which era did human history begin?
Svetllana [295]

Answer:

Prehistoric

Explanation:

The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.

7 0
3 years ago
Match the following
Brilliant_brown [7]

Answer:

Matches according to the terms

Explanation:

1. Stratosphere: The layer of the atmosphere that the ozone layer is part of

2.Recycle:  the process by  which certain waste  materials, such glass, aluminum, and paper are  prepared for reuse

3. Hazardous: the type of solid, liquid, or gas wastes that are      

   toxic,flammable, corrosive, reactive, or radioactive

4. Biodegradable: The type of wastes that can be broken down by other organisms into a reusable form

5.Nicotine: The addictive drug found in tobacco

6. Cancer: A disease frequently developed by smokers and passive smokers.

7.Diabetes:  A disease of the pancreas in which insulin is not produced in

The correct amounts so that glucose can be converted into

energy or stored as fat (insulin not given in the option)

8.Ozone: Organic compounds (VOCs), and nitrogen dioxide (NO) are

acted upon by sunlight

9.Plastic: When burned, it can cause an increase of CO2, ozone, and  sulfur dioxide in the atmosphere

10. Fossil fuel: Sulfur dioxide,aluminium,

11.Ozone: formed in the atmosphere when chemicals, called volatile

7 0
3 years ago
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