BIOLOGY MIDDLE SCHOOL

True or false
a fossil may tell a geologist when, where, and how an organism lived.

Answers

Answer 1
Answer: Sentense is absolutely TRUE

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Which of the following describes a chemical property of a metal?A. reacts with acid
B. conducts electricity
C. attracted to a magnet
D. high melting point

Answers

Answer: The correct answer option (A).

Explanation:

Chemical properties are the properties which are observed in a chemical reaction like change in arrangement in atoms or change in identity of the substance.

Metals reacts with acid to form salts and hydrogen gas. In which chemical composition of pure metal changes during the chemical reaction. So, yes it is a chemical property of metals.

Whereas conducting electricity,  property to get attracted by magnet and high melting point doesn't changes the arrangement of an atoms which means they are not chemical properties of metals but are physical properties of metal.

Hence, the correct answer option (A).

answer is react to acid

What is the major reason why fungus-like protists are not fungi?

Answers

Fungal-like protists includes parasitic and predatory molds, water molds (Class Oomycota), and terrestrial slime molds (Myxomycota). 
These both move and lack the chitin that helps define true fungi. 
These fungal/amoeboid Myxomycota have a motile life stage fungi do not. However they do produce fruiting bodies to reproduce as do some fungi. Slime molds have an amoeboid phagotrophic (feeding) phase of their life cycle and use their pseudopodia to move and eat. In their mobile life stage they lack cell walls. 
Oomycota are aquatic fungi-like protists. They are water molds & plant parasites known as white rusts, and downy mildews. They have cell walls composed of cellulose, not chitin like true fungi. 
The sexual reproduction has heterogamous sex cells and asexual reproduction has motile spores (zoospores swim not sperm). The zoospores, with two flagella, are their asexual means of dispersal in water and damp soil.
Fungi have both sexual reproduction and asexual budding in yeast (that is not binary fission like bacteria). 
They are not capable of independent movement like an animal; they are sessile like a plant. 
Fungi are heterotrophic and use external enzymatic digestion of food stomach they digest their food outside their bodies and absorb the digested nutrients, this makes them osmotrophs instead of phagotrophs, which engulf their food.
Hope This helped! :D
The major, simple reason is that they can move while mushrooms cannot.

Black mice and tan mice are native species that are observed in a particular region. Human habitation in the region caused an invasive mouse species to enter the region. These mice are brown and share the same food requirements as black mice. Tan mice have different food requirements. How will this change affect the food web in the region?a)The availability of food resources for black mice and brown mice will decrease.
b)The population of tan mice will decrease.
c)The black mice and tan mice will compete for food resources.
d)The tan mice and brown mice will compete for food resources.

Answers

The all powerful Potato says: A- The availability of food resources for black and brown mice will decrease.

The availability of food resources for black and brown mice will decrease.

Which correctly compares how coal and natural gas are formed? A.
Coal results from the compressed remains of plant matter, while natural gas is the compressed remains of marine organisms. Natural gas was made due to pressure and heat under buried layers of rock over millions of years, while coal was made by heating the compressed remains from magma underneath.

B.
Coal results from the compressed remains of plant matter, while natural gas is the compressed remains of marine organisms. Both are made due to pressure and heat under buried layers of rock over millions of years.

C.
Coal results from the compressed remains of marine organisms, while natural gas is the compressed remains of plants. Both are made due to pressure and heat under buried layers of rock over millions of years.

D.
Coal results from the compressed remains of plant matter, while natural gas is the compressed remains of marine organisms. Coal was made due to pressure and heat under buried layers of rock over millions of years, while natural gas was made by heating the compressed remains from magma underneath.

Answers

Coal results from the compressed remains of plant matter, while natural gas is the compressed remains of marine organisms. Natural gas was made due to pressure and heat under buried layers of rock over millions of years, while coal was made by heating the compressed remains from magma underneath. 

If a plant were to absorb a substance that readily reacts with carbon dioxide in the stroma, the dark reactions would be most likely to:

Answers

The right answer is the dark reaction would stop happening.
The Calvin cycle (or dark reactions, independent of the sunlight) makes it possible to manufacture glucose, an energy molecule, from carbon dioxide. This is called carbon fixation.There are three reactions of this cycle take place in the stroma of chloroplasts: the first of which is the fixation of carbon dioxide. which is a limiting step in this cycle.If a substance other than the components of the dark reactions absorbs and uses carbon dioxide, the carbon cycle will not be able to occur for lack of one of these ingredients which is the CO2.

Mucous membranes?A. Cover all the body's surfaces.
B. Line internal body surfaces that are in contact with the environment.
C. Produce antibodies to combat infection.
D. Secrete sweat, which has antibacterial enzymes.

Answers

Mucous membranes are the one which line internal body surfaces that are in contact with the environment. As examples we can say the nose musous membranes, the intern part of mouth, the genital organs. They are delicate and easily blees because they are highly irrigated by blood and as a consequence, produce mucous, which is a glicoprotein to impede the entrance of microorganisms (non-self), serving as a barrier.
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