BIOLOGY MIDDLE SCHOOL

What causes a species to change over time?What causes some species to not change over time?
What are the causes of species extinctions?

Answers

Answer 1
Answer: Species evolve through mutations in their genome. Mutations can occur from specific events or geographical isolation. If a species is genetically fit, there is no reason for them to evolve. Extictions can be caused by human interference, increase of predators, or loss of supplies such as food or water.

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PLEASE help me i am stuck In pea plants the allele for round seeds (R) is dominant and the allele for wrinkled seeds (r) is recessive. Under what conditions would we observe wrinkled seeds in a pea plant?
A) When the plant has a genotype RR
B) When the plant inherits a dominant allele from both parents
C) When the plant inherits a recessive allele from both parents
D)When a plant has a heterozygous allelic pair of the gene for seed shape

Answers

The answer is C.

(In order to observe wrinkled seeds in a pea plant, the genotype has to be rr).

Answer:

soo... did you get it right??

Also its C

Explanation:

What do bacteria have in common with the cells of other living organisms A-they have cell membranes
B-they are multi cellular
C- they have the same shape
D-they are made of protein
APEX

Answers

Answer:

A

Explanation:

bacteria have cell wall in common with with other organism and also have some organelles in common with other living organisms.

Explain homeostasis and identify 3 process by which cells maintain homeostasis

Answers

Homestasis is maintaining internal body temperature. Three processes would be during winter when it gets really cold and we wear gloves, hate, costs, and scarves which makes it easier for homestasis. Hibernation is another example when animals rest after storing up food internally to last them during the cold winters. One last example would be sweating which is a natural process that happens in our body which is a form of homestasis.

A food company has designed new types of breakfast cereal and is now working to decide which cereal to mass produce and begin selling. They can measure some traits of the cereals with scientific tools, but they also use small surveys to ask cereal buyers about their opinions. Which question could most likely be answered scientifically by the food company? Which cereal's box is the best color? Which cereal tastes the best to every eater? Which cereal contains the most sugar? Which cereal would sell the most boxes?

Answers

The food company’s questions are best answered by a combination of survey and scientific tools. To answer questions such as ‘which cereal's box is the best color?’ and ‘which cereal tastes the best to every eater?’ as well as ‘which cereal would sell the most boxes?’, the food company would need to conduct a survey to a group of people which resembles their target group most. The result would help them in answering those questions.

However, to answer ‘Which cereal contains the most sugar?’, the food company would need to use scientific tools to measure to sugar content in the cereal. This is the answer.

Answer: Which cereal contains the most sugar?

Explanation:

A scientific question can be define as the question which can only be answered by using experimentation procedures.

In the given condition, Which cereal contains the most sugar? The food company can conduct experimental trials to know the content of sugar. Hence, it is a scientific question.

The stretches of dna that have a code for specific information are called what?

Answers

The answer would be genes.

Through an uplift under the Earth's crust at a divergent boundary a __________ is formed.

Answers

Through an uplift under the Earth's crust at a divergent boundary a PLATEAU is formed

Answer:

C

Explanation:

Got it right

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