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Alona [7]
2 years ago
8

How are thorns and spines related to drought resistance?

Biology
1 answer:
Tresset [83]2 years ago
7 0

Answer:

To survive in drought conditions, plants need to decrease transpiration to limit their water loss. Some plants that live in dry conditions have evolved to have smaller leaves and therefore fewer stomata. Extreme examples are plants with leaves that resemble spiky thorns or spines.

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Migrating fibroblasts can be treated with various chemical agents while they are migrating. Explain what you expect for each of
goblinko [34]

Answer:

c

Explanation:

4 0
3 years ago
Use the Harris-Benedict equation to estimate your calorie needs. Show your calculations to explain how you arrived at your answe
Ratling [72]

Answer:

The Harris Benedict Equation is a formula that determines the total daily energy expenditure (calories) using BMR with some activity factors.

Basal Metabolic Rate (BMR) is defined as the amount of calories one would burn without doing anything for 24 hours. It uses variables of weight, age, height and gender to calculate BMR.

<em>BMR calculation =  447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)</em>

<em>In</em><em> </em><em>Harris Benedict Equation, </em><u><em>BMR</em></u><em> is </em><u><em>multiplied</em></u><em> by </em><u><em>activity factor </em></u><em>to determine calories need.</em>

The activity factors in Harris Benedict Equation are:

for no exercise =  1.2

exercise for 1 to 3 days/week or light exercise =  1.375

exercise for 3-5 days/week or moderate exercise  = 1.55

exercise for 6-7 days a week or hard exercise = 1.725

exercise for 2 times training = 1.9

<u>So, calculation for my calorie needs is as following:</u>

BMR = 447.593 + (9.247 x 50 kg) + (3.098 x 164.592 cm) - (4.330 x 23 in years) = 974.945

Calorie needs = BMR x 1.55

                        = 974.945 x 1.55

                        = 1511.16 calories

6 0
4 years ago
Read 2 more answers
Which features do sound waves have that ocean and light waves do not? Check all that apply.
Shkiper50 [21]
<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>
7 0
3 years ago
Read 2 more answers
Why are there so many satellites orbiting earth at this time?​
Alex17521 [72]

Answer:

2,787

Explanation:

Currently there are over 2,787 active artificial satellites orbiting the Earth.

4 0
3 years ago
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kaheart [24]
Molecule 2 is DNA


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8 0
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