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3 years ago

Explain how sea level changed throughout the mesozoic era

Biology

1 answer:

tresset_1 [31]3 years ago

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Answer:

Among causes of global sea level fluctuations, the change from warm to cold times has been accorded greatest probability even in the Mesozoic. ... Phases of sea level highstand and warm times caused an increased fossil record and poleward distribution.

Explanation:

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What does high water potential mean?

Mazyrski [523]

Water potential is the measure of water to move from one area to another. Pure water has a water potential of 0. Water potential can never be positive, so a negative water potential has solutes in it. The more negative it is the more solutes present.

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3 years ago

_____is an interaction between species that affects both species negatively (-/-), as they utilize similar resources.

jolli1 [7]

An interaction between species that affects both species negatively (-/-) , as they utilize similar resources is called as Competition .

Competition :

Competition is a process in which the fitness of individual of one species is significantly lower than that of the individual of same or different species.

Types of competition :

For the necessities of life , it is divided into two types .they are as follows,

A) interspecific competition : it is a competition which occurs between the individuals of two different species having some requirements of life , e.g.,carnivorous animals such as tiger ,lion ,leopard etc .compete for the prey . in the forest habitat ,herbs and trees compete for sunlight , water space , minerals , and biological pollinators .

If the individuals of two different species have sme one or more requirement the the competition becomes very severe e.g., grassland is the common habitat for bison ,dear rabbits ,rats grasshoppers , etc .if thee is short supply of grass due to draught then the competition becomes severe

The survival of the consumers is determined by the quantity of grass required by each species ,ability to change the food and its capacity to migrate to new localities.

B) Intraspecific competition : it occurs between the individuals of the same species .this type of competition is very severe as all the individuals of the same species have almost common requirement of food ,habit etc .besides they also exhibits similar adaptations to fulfill their requirements ,e.g., animals of same species compete for water ,food and mates .

Intraspecific competition is the driving force behind evolution and natural selection .

Thus the Competition only negative impact on environment.

Learn more about Competition here:

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7 0

2 years ago

Organic compounds all contain the element carbon. Which organic compound used for stored chemical energy contains carbon, hydrog

aleksklad [387]

Answer: Lipids

Explanation:

7 0

3 years ago

T is a trait for tallness in pea plants. the trait for shortness is t. in a case of simple dominance, what is the height of a pl

Ulleksa [173]

I think the phenotype of a genotype tt (from the question) will show shortness which homozygous with two similar alleles for shortness trait. Therefore; since the t trait is recessive over the T allele which is dominant, Tt, -will be a tall pea plane, TT- tall (homozygous), tT- tall ( heterozygous), tt -short (homozygous).

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3 years ago

Read 2 more answers

when two true breeding pea plants that show contrasting traits are crossed 1) mention the pod shape in F1 generation 2)work out

agasfer [191]

Answer:

1.) Inflated pod shapes (Cc) in the F1 generation

2) See attached image for the work out of the cross from P generation to F2 generation.

3). CC- 1/4, Cc- 1/2, cc- 1/4

Explanation:

This question is related to the pod shape trait encoded by a single gene in pea plants. The alleles for inflated pod shape (C) is dominant over the allele for constricted pod shape (c). This means that allele "C" will be expressed over allele "c" in a heterozygous state.

The two truebreeding parent plants will have genotypes: CC (inflated pod shape) and cc (constricted pod shape). When these two plants are crossed, an all heterozygous plant with genotype: Cc will be formed in the F1 generation. Since, C is dominant over c, the F1 Cc plants will have an inflated pod shape phenotype.

The F1 Cc plants are self-crossed to produce the F2 generation offsprings i.e. Cc × Cc. The gametes C and c will be produced by each F1 parent, which will be used to draw a punnet square (see attached image). From the cross, offsprings with genotypes: CC, Cc and cc are produced in the F2 generation.

CC (phenotypically inflated pod shape)- 1/4

Cc (phenotypically inflated pod shape)- 1/2 or 2/4

cc (phenotypically constricted pod shape)- 1/4

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3 years ago