All of the populations of different species live and interact in an area

Answers

Answer 1

Answer: Community (from ecology)

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Nucleic acids are composed of:a: a phosphate group, a pentose sugar, a nitrogen base b: a phosphate group, a pentose sugar, a carboxylic acid c: a pentose sugar, a nitrogen base, an R group d: a nitrogen base, an amino acid group, a carboxylic acid

Scientists believe that ancient ancestors of all animals were.A. Single-celled prokaryotes that reproduced asexually
B. Single-celled eukaryotes that sometimes grew in colonies
C. Multi-cellular organisms that were probably autotrophic.
D. Multi-cellular organisms with an alternation of generations lifecycle.

Answers

The correct answer is B. Single-celled prokaryotes that sometimes grew in colonies

A is the answer
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Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Answers

Answer:

The probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy is zero

Explanation:

Given

Round see (R) is dominant to wrinkled seed (r)

While Yellow seed (Y) is dominant to green seed (y)

Now a cross is carried out between RRYY * RrYy, the following offspring are produced

RRYY * RrYy

The gametes of RRYY are RY, RY, RY, RY

The gametes of RrYy are RY, Ry, rY, ry

RY Ry rY ry

RY RRYY RRYy RrYY RrYy

Genotype Ratio

RRYY: RRYy: RrYY: RrYy

4:4:4:4

1:1:1:1

Phenotype

All are round and yellow

The probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy is zero

All offspring F1 will be dominant for Round seeds ,there will be no recessive wrinkled. Try punnett square to be sure.

Positive feed back is most like

Answers

Favorable commentary.

Positive feedback is most like a compliment.

Choose the right word to complete the sentence. Especially in drier regions, water is a ______ resource. A) Abundant B) Limited C) Endless D) Precious

Answers

Answer: B) Limited

Explanation:

Especially in drier regions, water is a limited resource.

In this reaction _____.[The figure shows a scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, the other - of C and D. The products are two molecules, one of which consists of A and C, the other - of B and D. The potential energy of molecules AB and CD is higher than the potential energy of molecules AC and BD.]
a. the products have been rearranged to form reactants
b. AC is a reactant
c. CD is a product
d. the products have less potential energy than the reactants
e. entropy has decreased

Answers

Answer:

d. the products have less potential energy than the reactants

Explanation:

AB + CD → AC + DB

Reactants → Products

AC is a product not a reactant

DC is a reactant not a product

Entropy always increases in products

The products have not been rearranged to form reactants

In this reaction d. the products have less potential energy than the reactants

What is potential energy ?

The potential energy of a molecule is the energy stored in the bonds between the atoms in the molecule. When two molecules react, the bonds in the reactants are broken and new bonds are formed in the products. If the bonds in the products are stronger than the bonds in the reactants, then the potential energy of the products will be lower than the potential energy of the reactants.

In this reaction, the potential energy of molecules AB and CD is higher than the potential energy of molecules AC and BD. This means that the bonds in the products are stronger than the bonds in the reactants.

Find out more on potential energy at brainly.com/question/1455245

#SPJ6

I really dont get this at all

Answers

1: D

2. B (I believe is the answer)

3. D

4. C

Hopefully this helped and good luck

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