Answer:
D
Explanation:
Natural selection is the differential survival and reproduction of individuals because of the differences in the phenotypic characteristics. It supports the fact that those organisms, which have phenotypic characteristic favorable to survive in the changing environment as compared to other organisms, and these traits will also be passed to the successive generations.
In the given situation, the hummingbirds those have adapted according to the needs, that is deriving nectar from either from short and long tubes nectar. Therefore, two phenotypic characteristics like short beak and long beaks will become dominant trait in the population of humingbirds as the intermediate beak hummingbirds will not be able to feed from either of the flowers.
<h2>Pls, Branliest!</h2>
Answer: Mollusc
Explanation: Mollscs are the next biggest phylum of animals that do not have nor develop backbone which includes nearly 23% of every named individual being that embodies the properties of existence in the sea. However, they live in both flowing water like streams and springs and in still water like ponds and lakes, some also live on land. They are highly different in both in size and structure and in attitude and environment.
b. All adults should engage in moderate-intensity aerobic physical activity for at least 150 minutes per week, vigorous-intensity aerobic activity for 75 minutes per week, or an equivalent combination of the two.
Explanation:
The Physical Activity Guidelines for Americans guidelines for older adults states that:
Older adults are more susceptible to cardiac and nervous disorders along with poor musculoskeletal strength.
To maintain good cardiac and nervous health; musculoskeletal fitness and strength; reduce depression, cognitive decline; older adults are directed to engage in moderate-intensity/vigorous or combination of both aerobic physical activities and muscle-strengthening exercises.
They should include physical activities combining one or more of; occupational (work-based) activities; transportation (walking, cycling); household chores (cleaning); leisure time activities (gardening, dancing); sports activities (hiking, biking, swimming, games, running) and planned daily routine exercise activities; all of them as part of their daily routines performed as an individual, family or community-based activities
.
Older adults with mobility issues should perform exercises to improve their balance and prevent falls
.
Answer:
In compare to eukaryotes,prokaryotes are morphologically simpler,more evolutionary primitive,less sensitive to physical environment.
Explanation:
Prokaryotes are unicellular organism which don't possess cell organelle like nucleus,mitochondria,Endoplasmic reticulum,golgi body, etc.
They are the first living organism in the primitive earth and the genetic components are located in the cytoplasm which is enclosed by cell membrane.
prokaryotes contain 3 domains that are Archaea, bacteria and eukarya.
The cytoplasm is enclosed by cell membrane.
Molecular studies have reveal that eukaryotes are evolved from prokaryotes.
Some prokaryotes bear long projection which helps them for locomotion,called as flagellum.This is present in gram positive and gram negative bacteria.
Cytarabine<span> was patented in 1960 and approved for medical use in 1969. It </span>is<span> on </span>the<span> World Health Organization's List </span>of<span> Essential Medicines, </span>the most<span> effective</span>
