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kotykmax [81]
3 years ago
6

If jeff is walking 2 mph, how far will he be able to travel in 30 minutes

Biology
1 answer:
devlian [24]3 years ago
3 0
1 mile.

Since he walks at a speed of 2 miles per hour, he will have only walked 1 mile after walking for half of an hour.
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I need help. Write a short paragraph that compares the reproductive structures of gymnosperms and angiosperms
Hitman42 [59]

Answer:

Angiosperms are plants with flowers, gymnosperms are plants that do not have flowers. Both groups belong to spermatophytes or seed plants.Gymnosperms are seed-producing plants that do not possess flowers. In gymnosperms, the flowers are replaced by cones, which lack ovaries.

Explanation:

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A shuttle’s payload bay can be used to _____.
alisha [4.7K]

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carry satellites into orbit

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Some have speculated that the origin of life occurred at geothermal vents. amino acids can form there. compared to the amino aci
cluponka [151]

There are a number of amino acids that have formed under certain environmental conditions if the required elements are present and the energy conditions ar compatible with chemical assembly. These conditions have also allegedly formed amino acids on meteors, asteroids and comets.


But, amino acids are a very minor component of more complex biochemical assemblies required for life. Pentose sugars are also required, which form under different environmental conditions than amino acids. More importantly, only left-handed homochiral amino acids and right-handed homochiral sugars can form functioning biochemical assemblies that are viable in an organism. But, natural conditions, like hydrothermal vents only produce racemic versions of sugars and acids, meaning they are always approx. 50% left and right handed. This is fatal to forming viable biochemical assemblies.


Further, it is not possible for all of the 20+ homochiral amino acids needed for a living organism to form naturally. The only ones found have been the simpler amino acids. Also, the 4 critical nucleotide amino acids, C, G, A, T, do not form naturally, are not homochiral, nor in the right proportions.


The geo/hydrothermal vent conjecture is nonsensical. These are open systems, susceptible to currents, mineral contamination, salinity, ph, and temperature, making them a totally unacceptable environment for the precise and exact placement of elements to assemble to form life.

3 0
3 years ago
HELP ME PLS I DONT UNDERSTAND :( WILL GIVE BRAINLIEST 2 QUESTIONS
Serhud [2]

Answer:

1. D, because plants are the main producers

2. B, because the wind direction makes Seattle coo and dry, and the mountain block some of the wind for Spokane

Explanation:

5 0
3 years ago
Which of the following is a true statement?Anabolic pathways build molecules, require energy, and are endergonic.Anabolic pathwa
expeople1 [14]

Answer:

A: Anabolic pathways build molecules, require energy and are endergonic

Explanation:

Anabolism and catabolism are the two important process of metabolism - a process through which cells get energy to drive various processes within the body and get rid of toxic wastes.

Anabolic and catabolic reactions can be described as opposing sides of the same coin. While anabolism refers to the various reactions that build up molecules within the cell, catabolism has to do with the breakdown of big or complex molecules into smaller ones.

Both processes involves energy. Anabolic reactions require energy to drive the building up process and therefore referred to as endergonic reactions. On the other hand, catabolic reactions liberate energy during the breaking down of complex molecules and therefore referred to exergonic reactions.

A good example of anabolic reaction is photosynthesis which involves the building up of carbohydrate (glucose) using carbon-dioxide, water molecule and energy while a good example of catabolic reaction is respiration which involves the breakdown of carbohydrates into carbon-dioxide, water molecules and the release of energy.

Hence, the only correct option is A.  

6 0
3 years ago
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