Answer:
The correct option is A. A theory changing because a new scientific method was developed.
Explanation:
A scientific theory can be described as wide explanations for a phenomenon to occur. Scientific theories can be proven wrong whenever advancements are made and modern researches show that those theories were false. In contrast to this, a scientific law when made never changes. A scientific law is just a statement whereas a theory is a wide explanation of observations.
The experiments before Mendel were hence, theories which were subjected to change upon further research.
Answer:
B.
Explanation:
Because a Longitudinal wave is a wave vibrating in the direction of propagation.
Neurosecretory cells make and release the hormones from the posterior pituitary. The cell bodies of these neurosecretory cells receive synapses from Afferent neuron and their axon terminals release hormones into blood stream or the local extracellular space.
Neurohormone is generally produced by neurosecretory cells and liberated by nerve impulses. Neurosecretory cells receive synapses from afferent neurons to guide magnocellular neurons .
A synapse is known as a small junction at the end of a neuron that allows any signal to pass through one neuron to another. Synapse is a junction were the one neuron get connected with the other neuron .
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The secondary level of consumers will be affected trace amounts of pesticides, like DDT, that run off into lakes, streams and ponds.
<h3>What are Producers</h3>
Producers are mainly plants that undergo photosynthesis to produce carbohydrates and oxygen.
<h3>Consumers</h3>
Consumers are herbivores or canivores or omnivores that feed on primary producers like plans and others.
- Consumers can be primary which feed on plants examples are goats.
- Secondary consumer are canivores that feed on meat of other animals, they feed on primary consumer.
- Tertiary consumers feed on both plants and meat of other plants.
Therefore, The secondary level of consumers such as fish will be affected trace amounts of pesticides, like DDT, that run off into lakes, streams and ponds because they live in water and their food is in water. Once the substances are in their water, it will become toxic and can lead to their deaths.
Learn more about producers and consumers from the link below.
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Answer:
The largest problem is that single viruses may create multiple plaques, resulting on overestimates of the number of viruses present.
Explanation:
Plague assay allows to measure the concentration of viruses in a sample, it is a widely used approach for determining the quantity of infectious virus. Therefore the amount of plaques created by a single virus is not a concern when evaluating the results of plaque assays.
