BIOLOGY MIDDLE SCHOOL

Which of the following readings is used to determine the availability of minerals?a.
radioactivity
b.
magnetism
c.
gravity
d.
all of the above

Answers

Answer 1
Answer: The option that represents thy type of reading which is used to determine the availability of minerals is D. all of the above. Depending on the situation, as well as the type of a mineral, scientists will use radioactivity, magnetism, or gravity in order to determine how much of a mineral there is in a certain area. Some of these techniques are good for one type of a mineral, and some for another, but these scientists use all three types of readings in order to determine what they need.
Answer 2
Answer: the answer is D A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition.

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Which type of cells form through meiosisA.sex cells
B.body cells
C.zygote cells
D.epithelial cells

Answers

Answer: Sex cells

Explanation:
A. Sex cells
Meiosis produces our sex cells or gametes.

Why is DNA frequently found associated with protein inside cells

Answers

During DNA replication, mRNA copies the DNA in the nucleus and rRNA goes to the ribosome where proteins are made. tRNA matches up to the rRNA and creates polymers. This is called protein synthesis

3. Which BEST compares compounds and mixtures? A Compounds and mixtures contain a variety of elements, but the elements in a mixture do not retain their original characteristics when combined.

 B Compounds and mixtures contain a variety of elements, but the elements in a mixture are able to last longer because they are chemically combined.

 C Mixtures can be made up of elements and compounds that lack definite proportions, but a compound is composed of elements that are present in definite proportions.

Answers

Answer:

The statement that BEST compares compounds and mixtures is option C:

Explanation:

"C Mixtures can be made up of elements and compounds that lack definite proportions, but a compound is composed of elements that are present in definite proportions."

Answer:

 A Compounds and mixtures contain a variety of elements, but the elements in a mixture do not retain their original characteristics when combined.

Explanation:

As Compounds consist of two or more atoms that can be broken down into simple elements.

A Mixture contains two or more atoms that can be mixed together. Those atoms are not chemically combined.

Name three structures that are most likely found in all fish.

Answers

 gills, fins, and blood.

The three structures and physical entities that almost all fish have:
Gills
Fins
Blood

Almost all fish have gill slits because there is no other way they can breathe underwater without having gills.Fins are used to move around the water and blood delivers oxygen and nutrients. 

Food webs diagram the complex relationships of energy flow in an ecosystem containing a variety of producers and consumers. A diagram is provided. Which of the following correctly shows one path that energy would flow through this ecosystem?A. A Star grass → termite→ wildebeest→ aardvark
B. B Hyena → aardvark → impala → harvester ant
C. C Grasshopper → termite→ warthog → hare
D. D Red oat grass → termite → wildebeest → lion

Answers

In food web, Grasshopper → termite→ warthog → hare correctly shows one path that energy would flow through this ecosystem.

What do you mean by food web?

A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. Another name for food web is consumer-resource system.

Primary consumers, mostly herbivores, exist at the next level, and secondary and tertiary consumers, omnivores and carnivores, follow. At the top of the system are the apex predators: animals who have no predators other than humans.

Food web is an important conceptual tool for illustrating the feeding relationships among species within a community, revealing species interactions and community structure, and understanding the dynamics of energy transfer in an ecosystem.

Learn more about food web:

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Hi! Hola! Aloha!

The answer would be D. Red oat grass > termite > wildebeest > lion

Hope this helps !

Which of the following statements best explains the impact deforestation has had on the water cycle

Answers

Deforestation increases the amount of runoff because plants are not present to absorb the water.

Increased surface runoff has increased water pollutants
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