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RUDIKE [14]
3 years ago
15

A lawn sprinkler is a compound machine?

Biology
1 answer:
ExtremeBDS [4]3 years ago
5 0
Yes as a compound machine is a machine that consists of more than one simple machine. Some compound machines consist of just two simple machines. For example, a wheelbarrow consists of a lever, as you read earlier in the lesson "Simple Machines," and also a wheel and axle. Because a sprinkler has a rotation component and a transportation of water with the hose.
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C) Explain why antibiotics can be used to treat bacterial infections, but not viral infections
denis-greek [22]

Answer:

Antibiotics are strong medicines that treat bacterial infections. Antibiotics won't treat viral infections because they can't kill viruses.

Explanation:

You'll get better when the viral infection has run its course. Common illnesses caused by bacteria are urinary tract infections, strep throat, and some pneumonia.

5 0
3 years ago
5. What is the probability of a child having blood
fredd [130]

Answer:

50/50  

Explanation:

Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father. A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.

3 0
3 years ago
When roots take up mineral ions, they are built up against their concentration gradient. both anion and cation transport utilize
attashe74 [19]
I believe the answer is B, primary active transport. Root hair cells in plant use active transport to absorb mineral ions such as nitrates from the soil. The concentrations of minerals in the soil are lower in the soil than in within the root hair cell, therefore the transport will be against the concentration gradient which does not favor diffusion, therefore the pant has to use active transport.
6 0
3 years ago
Two garden plots were planted with corn. The soil was similar in each, and equal amounts of water were applied to each plot. One
Svetllana [295]

Answer:

D

Explanation:

Control group in an experiment does not receive any treatments. It is used as a benchmark to ensure that there is statistical difference in data between the variables of the control and those with treatments. It also ensures that there are no other overlooked factors that have an influence on the experiment that needed to be considered. Having a control group reduces the chances of erroneous conclusions.  

5 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!ASAP!!!!!!!!!!!!!!!
Natalka [10]
An electron transport chain (ETC) is a series of complexes that transfer electrons from electrondonors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.
7 0
3 years ago
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