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Ratling [72]
3 years ago
13

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

RAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Biology
1 answer:
zloy xaker [14]3 years ago
6 0
A because let’s say the body temperature increases, the body’s mechanisms will obviously react to that positively by giving out heat or swear
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Discuss why heart rate equals pulse rate at rest and after exercise.
denpristay [2]

<span>When a heart beats, blood is pushed through the body, causing a change in blood pressure and a pulse in main arteries. In healthy individuals, this means the heart rate is often synchronized with the pulse. However, heart rate and pulse rate are technically different because a heart rate measures the rate of contractions (heartbeats) of the heart, whereas a pulse rate measures the rate of palpable blood pressure increases throughout the body.</span>

For individuals who have certain heart conditions, the heart may not efficiently push blood through the body with each contraction. These individuals have a pulse that is lower than their heart rate. Other factors affecting heart rate and blood pressure include body mass, athleticism, obesity, medication, alcohol use, and smoking. For most people, each contraction produces a pulse, so the pulse is an effective way to measure heart rate. Baseline heart rates are resting heart rates, measured by taking the pulse.

While in exercise for most people, heart rate and pulse will not go above 220 beats/minute during these times, nor should that high of a heart rate be accepted for more than minutes based on activity level and duration as a variety of studies reported by Cleveland Clinic indicate that repetitive, excessive heart rate experienced, for example, by repeat marathon runners, may cause heart muscle damage leading to arrhythmia (irregular heart palpitations) and an assortment of heart conditions.

<span> Normal, healthy adults who are reasonably fit and not overweight, and do not smoke or drink heavily, will have resting heart rates between 60 and 100 beats per minute (bpm); their pulse will reflect this. Average, healthy teenager heart rates are the same as those for adults, while children under 10 years of age experience higher heart rates and pulses:</span>

<span>·         </span>Newborns (1-30 days old) = 70-190

<span>·         </span>Infants (1-11 months = 80-160

<span>·         </span>Toddlers (1-2 years old) = 80-130

<span>·         </span>Preschoolers (3-4 years old) = 80-120

<span>·         </span>Elementary Age (5-10 years) = 70-115

Athletes share the same range with others in their age group, but teen and adults who are excessively active and fit may have resting heart rates and pulses as low as 40 bpm.

 

<span> </span>

5 0
3 years ago
How does radiometric dating provide support for the theory of evolution by natural selection?
MrRa [10]

Answer:

By establishing linking features of fossils in different age brackets through radioactive dating

Explanation:

Radioactive dating estimates the age of fossils and rock. Fossils are remains of living organisms that are primarily found in the sedimentary rocks. Carbon dating is used to determine the age of the fossils that are not older than 50 thousand years.  

For fossils older than that uranium dating is used. Based on the age estimation of fossils, fossils belonging to the same age bracket are grouped from the oldest time to the most recent time thereby marking the common characteristics of different fossils at each age brackets. In this way radioactive dating helps the scientist in establishing evolutionary links.

7 0
4 years ago
Sister taxa Sister taxa represent a polytomy. represent the common ancestor of taxa. diverge from all other lineages early in th
Romashka-Z-Leto [24]

Answer:

To find the most recent common ancestor of a set of taxa on a phylogeny tree, follow each taxon's lineage back in time (towards the base of the tree) until all the lineages meet up. That node represents their most recent common ancestor.

Explanation:

7 0
4 years ago
Copernicus and other astronomers before him thought that celestial bodies followed a _____ orbital path.
Lunna [17]

Copernicus and other astronomers before him thought that celestial bodies followed a circular orbital path.

Answer: circular - first choice

7 0
3 years ago
The process modeled in Figure 1 is closely related to the process modeled in Figure 2.
murzikaleks [220]

Answer:

The answer is;

One parent cell replicates its DNA and creates new cells or offspring without a combination of

genetic material from another source.

7 0
3 years ago
Read 2 more answers
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