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VARVARA [1.3K]
3 years ago
15

Indicate the period when the vertebrates invade the land

Biology
1 answer:
CaHeK987 [17]3 years ago
7 0
<span>first plant group to successfully invade the land. seedless vascular.. during which period were the seedless vascular plants most abundant.</span>
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You are a researcher interested in a rare, highly endangered bird species that lives in a very remote area of the Amazonian rain
Likurg_2 [28]

Answer:

- Ecological levels to consider in this study: organism, population and community

- Approach: I would use an observational approach to study this bird species

Explanation:

The levels of the ecological organization include the organism, population, community, ecosystem, and biosphere (from simplest to most complex). In this exploratory study, it is imperative to consider: 1-morphological, physiological and behavioral adaptations of the bird species (i.e., organismal-level), 2- size/density/structure of the bird population (i.e., population-level), and 3-interactions between bird population and other populations (i.e., community-level). The higher ecological levels, i.e., ecosystem-level (relationships between the community and abiotic factors ) and biosphere-level (biosphere =  planet Earth), can be in this case disregarded because this study is centered on a focus bird species. Moreover, it is expected to apply an observational strategy because nothing is currently known about the focus bird species. The experimental and modeling approaches seem more suitable to test a particular hypothesis being discussed (it is not the case for this study).

5 0
3 years ago
7. What happens during the process of translation?
SpyIntel [72]

Answer:

B

Explanation:

A happens during transcription, not translation. C happens during none. D happens during DNA replication, not translation. Hope this helps

6 0
2 years ago
What is the purpose of having a control and a variable in an experiment?
11Alexandr11 [23.1K]

a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.

a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.

7 0
3 years ago
Heterozygous male guinea pigs with black, rough hair (BbRr) are crossed with heterozygous female guinea pigs with black, rough h
GrogVix [38]
Remember for a di hybrid cross with two completely heterozygous parents, the phenotypic ratio will always be 9:3:3:1
9 will always display both dominant traits, black and rough hair. 3 will display black hair and smooth hair and 3 will display not black hair and rough hair and 1 will display both receive traits
7 0
3 years ago
Your digestive system is equipped with a diversity of enzymes that
nataly862011 [7]

Answer:

Enzymes are named according to <em>the reaction they catalyze</em>. Polymers are made of subunits joined together by different types of bonds, forming a macromolecule.

Hydrolases are used by the organism to catalyze the hydrolysis of polymers so they can be easily manipulated as monomers. Hydrolysis means reacting with water, water can break the bonds of different polymers turning it into its constitutive monomers.

4 0
3 years ago
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