Answer:
Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
Answer:
They are called covalent bonds.
Explanation:
I just went through the lesson.
Answer:
D.
Explanation:
It's the only choice that has three things that are made out of aluminum.
<em>Hope this helps :)</em>
Ecology is the science that studies the interaction between living beings and the environment in which they live.
<h3>How can I help with conservation?</h3>
- Buy recycled paper avoiding the death of more trees
- Have a recycling bin for paper, plastic, metal and glass, to reduce the environmental damage in waste and for the waste to be reused
- Recycle toner and ink cartridges from empty printers, to avoid polluting rivers and streams.
- If possible buy remanufactured cartridges, avoiding environmental impact
- Recycle old newspapers, avoiding the death of more trees.
<h3>What is the evidence for evolution?</h3>
- Anatomy. Species may share similar physical features because those features were present in a common ancestor (homologous structures).
- Molecular biology. DNA and genetic code reflect the common ancestry of life
With this information, we can conclude that Ecology is concerned with the living beings on the planet and their relationships with each other and with the environment.
Learn more about recycling in brainly.com/question/11861824
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Answer:
It is the varying chemical structure and properties of the R-group that make the amino acids different from one another. About 9 amino acids have non-polar R-groups and are relatively hydrophobic. Another 6 amino acids have strongly polar R-groups which readily attract water molecules.