<h3><u>Answer;</u></h3>
Compressions
Rarefactions
<h3><u>Explanations;</u></h3>
- A wave is a transmission of a disturbance from one point to another, and involve the transfer of energy from the source to another point.
- Waves may be classified as longitudinal waves or transverse wave depending on the vibration of particles relative to the wave motion or mechanical and electromagnetic waves based on the material medium of transmission.
- <em><u>Sound waves are examples of longitudinal waves that are mechanical waves since they require material medium for transmission. Longitudinal waves involves transmission of waves such that the vibration of particles is parallel to the wave motion , creating compressions and rarefactions.</u></em>
Answer:
B. bradycardia
Explanation:
Bradycardia, also known as slow heart rate, is usually slower than 60 beats per minute.
Hope this helps! :)
Crops that humans grow have decended from wild plants and are resistant to diseases and pest.
Explanation:
- The science of growing crops is known as agriculture.
- Humans have been developing agriculture since times immemorial.
- They have selected and cultivated crops that gave a better yield and developed new varieties by cross breeding Superior varieties with the inferior ones.
- Usually the cross bred varieties are cultivated and are resistant to pests and diseases.
Answer:
Results are validated when other scientists performs the same experiment and conclude with the same result.
Explanation:
Experimental evidence gives confirmation especially in science.Scientists starts an experiment by following some protocols such as observation,hypothesis,collection of data literature review,methodology,Experiments (trial and tests) finally results and discussion.Results are validated as experimental evidence. Eventually come to a conclusion.
